The elephant toothpaste reaction and the reaction of sugar and sulfuric acid are examples of exothermic reactions and chemical decomposition.
The elephant toothpaste reaction is a popular demonstration in which hydrogen peroxide is mixed with a catalyst, usually potassium iodide or yeast, to rapidly decompose the hydrogen peroxide into oxygen gas and water. This results in the rapid production of a large volume of foam, resembling toothpaste being squeezed from a tube. The reaction is exothermic, meaning it releases heat during the process, causing the foam to be warm or even hot to the touch.
On the other hand, the reaction between sugar (sucrose) and sulfuric acid is an example of a dehydration reaction, which is also exothermic. When concentrated sulfuric acid is added to sugar, it removes the water molecules (H2O) from the sugar, leaving behind a black mass of carbon. The reaction produces a significant amount of heat and steam, making it a visually impressive demonstration.
Both of these reactions showcase the power of chemical decomposition and the release of energy during exothermic reactions. The elephant toothpaste reaction emphasizes the rapid release of gas and foam, while the reaction between sugar and sulfuric acid highlights the process of dehydration and the production of heat.
These reactions provide insight into the various ways that chemical reactions can occur and the diverse range of outcomes that can result from different reactants and conditions.
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A compound has a low melting point, is not soluble in water, and doesn't conduct electricity when in solution. The sample is most likely:
A:
VO2
В:
CF4
C:
MgBr2
D:
not enough information
Answer: cf4
Explanation: trust me
If 5.9 × 10²⁵ molecules of CO₂ are produced in a combustion reaction, how many liters of CO₂ is produced? (The density of CO₂ is 1.98 kg/m³ and 1 L = 1 dm³).
Answer:
2.18 × 10³L
Explanation:
2178 litres of CO2 is produced in the combustion reaction.
HOW TO CALCULATE VOLUME
The volume of a substance can be calculated using the formula below:Density = mass ÷ volume
Firstly, we must calculate the number of moles present in 5.9 × 10²⁵ molecules by dividing by Avogadro number:no of moles. = 5.9 × 10²⁵ ÷ 6.02 × 10²³
no. of moles = 5.9/6.02 × 10²
no. of moles = 0.98 × 10²moles
= 98moles
Moles = mass ÷ molar mass
Mass of CO2 = moles × molar mass
Molar mass of CO2 = 12 + 16(2) = 44g/mol
Mass of CO2 = 98 × 44
Mass of CO2 = 4312g = 4.312kg
The volume of CO2 can be calculated as follows:Volume = 4.312kg ÷ 1.98kg/m³
Volume = 2.178m³
Since 1m³ = 1000L
2.178m³ = 2.178 × 1000
= 2178 liters.
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the volume of a solid object tends to increase as its temperature increases. which quantities determine how large the change in volume is? choose all that apply. the volume of a solid object tends to increase as its temperature increases. which quantities determine how large the change in volume is? choose all that apply. the change in temperature of the object the initial volume of the object the initial temperature of the object
I. The object's temperature change.
II. The object's original volume
Thermal expansion is the process through which a solid object's volume generally tends to grow as its temperature rises.
Therefore, the factors that govern how much a solid object's volume changes include;
I. The object's temperature change.
II. The object's original volume
In the end, this suggests that when a solid item is heated, its atoms vibrate quickly around their fixed locations, increasing the volume of the thing.
In conclusion, all three (3) states of matter exhibit the scientific phenomena known as thermal expansion;
Solid. Liquid. Gas.An object can heat up and its surrounds can cool down when heat is transmitted to it from its surroundings. When heat is converted to energy, it becomes part of the object's internal energy.
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Which statement accurately describes tectonic plate movement?
Tectonic plate movement can be prevented with planning.
Tectonic plate movement does not cause environmental change.
Tectonic plate movement does not affect organisms.
Tectonic plate movement is a long-term environmental change
Tectonic plate movement is a long-term environmental change that describes tectonic plate movement. Therefore, option (D) is correct.
What is plate tectonics?Plate tectonics can be described as the outer shell of the earth divided into various plates that the rocky inner layer above the core and slide over the mantle. The plates are rigid and slide over the mantle and shells in comparison to the mantle of the earth and this strong outer layer is known as the lithosphere.
The earth’s lithosphere is the composition of 7 to 8 major and many minor plates. The lithosphere is composed of a hard and rigid outermost shell of the earth that is divided into tectonic plates. When tectonic plates meet each other, their relative motion describes the type of boundary such as divergent, convergent, or transform.
Plate tectonics affects living organisms on the earth as causes volcanism, earthquakes recycling of elements within the biosphere and mountain-building, etc. Their movement brings long-term environmental change.
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Answer: option D is correct.
the reaction of amino acids to form peptides involves which pair of functional groups?a. two carboxyl groupsb. an amino and a carboxyl groupc. two amino groupsd. a carboxyl and an alcohol group
The reaction of amino acids to form peptides involves a pair of functional groups consisting of an amino and a carboxyl group.
Amino acids are the building blocks of peptides and proteins, and they have an amino group (-NH2) and a carboxyl group (-COOH) attached to a central carbon atom. When two amino acids come together, the amino group of one amino acid reacts with the carboxyl group of the other amino acid, forming a peptide bond (-CO-NH-) and releasing a molecule of water. This process is called condensation or dehydration synthesis. The resulting peptide bond links the two amino acids together, and the chain can continue to grow as more amino acids are added.
The reaction of amino acids to form peptides involves the combination of an amino group and a carboxyl group. This process is known as a peptide bond formation or condensation reaction, in which the amino group (NH2) of one amino acid reacts with the carboxyl group (COOH) of another amino acid. This reaction results in the release of a water molecule (H2O) and the formation of a covalent bond between the two amino acids, creating a peptide. The peptide bond is represented as -CONH- and plays a crucial role in forming the primary structure of proteins.
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Complete this table relating the values of Ecell and ΔG to the Q/K ratio
Q/K Ecell ΔG
<1
=1
>1
Drag these labels into table as appropriate:
>0, =0, <0
Complete this table relating the values of E cell and ΔG to the Q/K ratio, given below:
What is E cell?In an electrochemical cell, the potential difference between two half cells is measured by the cell potential, or Ecell. The capacity of electrons to go from one half cell to the other is what determines the potential difference.
The following is how the Nernst equation may be represented for measurements made at 298K. E = E₀ - 0.0592/n log10 Q.
As a result, according to the Nernst equation, the reaction quotient determines the overall potential of an electrochemical cell.
Because they are not spontaneous, electrolytic cells, which are reactions that only take place with the input of an external energy source, are considered negative. They're spontaneous if Ecell is positive.
The completed table is given below:
Q/K Ecell delta G
<1 >0 <0
=1 =0 =0
>1 <0 >0
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issued this? watch kcv: atomic theory; read section 2.3. you can click on the review link to access the section in your etext. carbon and oxygen form both carbon monoxide and carbon dioxide. when samples of these are decomposed, the carbon monoxide produces 3.36 g of oxygen and 2.52 g of carbon, while the carbon dioxide produces 9.92 g of oxygen and 3.72 g of carbon.
The atomic ratio of carbon to oxygen in carbon monoxide (CO) is 1:1, and the atomic ratio of carbon to oxygen in carbon dioxide (CO₂) is 2:1.
Firstly, we can analyze the decomposition of carbon monoxide (CO) and carbon dioxide (CO₂) to determine the atomic ratios involved.
Let's denote the atomic ratio of carbon to oxygen in carbon monoxide as x, and the atomic ratio of carbon to oxygen in carbon dioxide as y.
According to the given data;
Decomposition of carbon monoxide (CO);
Oxygen produced = 3.36 g
Carbon produced = 2.52 g
We know that the atomic mass of carbon is 12 g/mol, and the atomic mass of oxygen is 16 g/mol. Using these values, we can calculate the number of moles for each element;
Number of moles of oxygen = mass / atomic mass = 3.36 g / 16 g/mol = 0.21 mol
Number of moles of carbon = mass / atomic mass = 2.52 g / 12 g/mol = 0.21 mol
Since the atomic ratio of carbon to oxygen in carbon monoxide is x, we can write the following equation;
0.21 mol C / (0.21 mol O) = x
Simplifying the equation, we have;
x = 1
Therefore, the atomic ratio of carbon to oxygen in carbon monoxide is 1:1.
Decomposition of carbon dioxide (CO₂);
Oxygen produced = 9.92 g
Carbon produced = 3.72 g
Following the same calculations as before;
Number of moles of oxygen = mass / atomic mass = 9.92 g / 16 g/mol = 0.62 mol
Number of moles of carbon = mass / atomic mass = 3.72 g / 12 g/mol = 0.31 mol
Since the atomic ratio of carbon to oxygen in carbon dioxide is y, we can write the following equation;
0.31 mol C / (0.62 mol O) = y
Simplifying the equation, we have;
y = 0.5
Therefore, the atomic ratio of carbon to oxygen in carbon dioxide is 1:0.5, which can be simplified to 2:1.
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--The given question is incomplete, the complete question is
"Missed this? watch kcv: atomic theory; read section 2.3. you can click on the review link to access the section in your text. carbon and oxygen form both carbon monoxide and carbon dioxide. when samples of these are decomposed, the carbon monoxide produces 3.36 g of oxygen and 2.52 g of carbon, while the carbon dioxide produces 9.92 g of oxygen and 3.72 g of carbon. Calculate the atomic ratio of carbon to oxygen in carbon monoxide, and carbon dioxide."--
according to collision theory, what three things are needed in order for a chemical reaction to occur?
Answer:
the particles must 1. collide
2. with sufficient energy
3. in proper orientation.
Explanation:
hope this helps
you are given a metal cube. one of its edges measures 1.8 cm. it has a mass of 5.00 grams. imagine that the substances in the table are in a graduated cylinder and are separated into layers based on their densities. if you drop the metal cube into the graduated cylinder, what two substances is the metal cube most likely touching?
The metal cube is most likely touching the substances with densities closest to its own density.
When the metal cube is dropped into the graduated cylinder, it will settle and come into contact with the substances that have densities closest to its own density.
The density of the metal cube can be determined by dividing its mass by its volume. Since the cube has a mass of 5.00 grams and one of its edges measures 1.8 cm, we can calculate its volume by cubing the length of one edge: 1.8 cm * 1.8 cm * 1.8 cm = 5.832 cm³.
Next, we need to compare the density of the metal cube to the densities of the substances in the graduated cylinder. The substances in the graduated cylinder are separated into layers based on their densities.
By observing the densities of these substances, we can identify the two substances that have densities closest to the density of the metal cube. The metal cube is most likely touching these two substances in the graduated cylinder.
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PLEASE HELP AGAIN lol thank you :))
An 18.7 g sample of platinum metal increases in temperature from 21.2C to 23.5C
when 5.7 J of heat are added. What is the specific heat of platinum?
Answer:
132.53 J/kg.°C
Explanation:
Applying,
Q = cm(t₂-t₁)................ Equation 1
Where Q = amount of heat, c = specific heat capacity of platinum metal, m = mass of platinum metal, t₁ = initial temperature, t₂ = Final temperature.
Make c the subeject of the equation
c = Q/m(t₂-t₁).............. Equation 2
From the question,
Given: Q = 5.7 J. m = 18.7 g = 0.0187 kg, t₁ = 21.2°C, t₂ = 23.5°C
Substitute these values into equation 2
c = 5.7/[0.0187×(23.5-21.2)]
c = 5.7/0.04301
c = 132.53 J/kg.°C
The mass of an object is 32g and its density is 17g /mL. what is its volume
Explanation:
here,
Mass (m)= 32 g =0.32 kg
Density(d)= 17 g/ml
volume (v)=?
we know that,
d=m/v
17=0.32/v
v= 0.32/17
v=0.018
Answer:
\(\boxed {\boxed {\sf v \approx 1.88 \ mL}}\)
Explanation:
The density formula is:
\(d=\frac{m}{v}\)
If we rearrange the formula for volume, the result is:
\(v=\frac{m}{d}\)
The mass of the object is 32 grams. The density is 17 grams per milliliter.
\(m= 32 \ g\\d= 17 \ g/mL\)
Substitute the values into the formula.
\(v=\frac{32 \ g}{17 \ g/mL}\)
Divide. Note that the grams, or g, will cancel each other out.
\(v=\frac{32 }{17 \ mL}\)
\(v=1.88235294 \ mL\)
Let's round to the nearest hundredth to make the answer more concise.
The 2 in the thousandth place tells us to leave the hundredth place as is.
\(v \approx 1.88 \ mL\)
The volume of the object is about 1.88 milliliters.
Are the following chemical equations balanced or
Balanced / Onbalanced
.
CH4 + 4Cl2 → CCL + 2HCL
Balanced / Unbalanced
N2 + 3H2
2NH3
Balanced / Unbalanced
C3H2 + 302 + 3CO2 + 4H2O
+
Answer:
the first is unbalanced
because the number of hydrogen are not equal on both sides
the second one is balanced
because the number of nitrogen and hydrogen atoms are equal on both sides
and the third one seems to be incomplete
Which equation represents the second ionization energy of magnesium? Choose one: A. Mg^+ (g) +e^- -> Mg (g) B. Mg^+ (g) -> Mg^2+ (g) + e^-
C. Mg (g) -> Mg^+ (g) + e^-
D. Mg (g) + Mg^2 + 2e^- -> Mg^- (g)
E. Mg^2 (g) + 2e^- -> Mg(g)
The equation which represents the second ionization energy of magnesium is Mg⁺ (g) -> Mg²⁺ (g) + e₋.
What is ionization energy?Ionization energy is defined as the minimum amount of energy required to remove an electron which is loosely held in the outermost shell to form an isolated gaseous atom,ion or molecule.
It has a positive value for neutral atoms indicating that the ionization process is an endothermic process . The closer the outermost shell electrons are to the nucleus of an atom higher is it's ionization energy.It is expressed in electron volts or joules.
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In this model of a reaction, how do you interpret the orange balls being positioned in the middle of a line drawn between two atoms?
The orange balls being positioned in the middle of a line drawn between two atoms interpret a nonpolar bond exists between the two atoms.
In nonpolar bonds the arrangement of electrons are in the middle between two atoms (see the picture below).
The orange balls represent the electrons.
For example, nitrogen molecule (N₂) has strong nonpolar triple covalent bond (:N:::N:), that is why it is very stable and have low reactivity.
In molecule of nitrogen (N₂), bond order is 3 , because there are three pair of electrons (6 electrons) between nitrogen atoms.
Other example, molecule of oxygen has nonpolar bonds.
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during a 2 hour trip,a family is able to travel 140 kilometers. what is the average speed of the family during this portion of this trip?
The average speed of the family : 70 km/h
Further explanationGiven
time = 2 hour
distance = 140 km
Required
The average speed
Solution
Distance is the length traveled by an object within a certain time
Average speed = total distance/total amount of time
Can be formulated :
Avg speed = d : t
Total distance traveled : 140 km
Total time : 2 hr
Avg speed = 140 : 2 = 70 km/h
What is the∆S° of 0₂
Answer:0
Explanation: zero because it is the most stable form of oxygen in its standard state
How many moles of iron atoms are obtained from 320kg of iron oxide
Answer: 4010 mol of iron atoms
Explanation:
Given Information
Iron Oxide = Fe₂O₃
Mass = 320 kg
Given atomic mass / molecular weight
Fe = 55.8 g / mol
O = 16.0 g / mol
Fe₂O₃ = 55.8 × 2 + 16.0 × 3 = 159.6 g / mol
Given formula
n = m / M
n = number of molesm = massM = molecular weightConvert the unit of mass to Gram
1 kg = 1000 g
320 kg = 320 × 1000 = 320 000 g
Substitute values into the given formula
n = m / M
n = (320000) / (159.6)
n ≈ 2005 mol of Fe₂O₃
Calculate the number of moles of Fe (Iron atoms)
Since each mole of Fe₂O₃ has 2 moles of Fe, then:
2005 × 2 =\(\Large\boxed{4010~mol~of~Fe}\)
Hope this helps!! :)
Please let me know if you have any questions
Which gas law relates pressure and volume?
- Is there a direct or indirect relationship?
- What variable is held constant?
Gas laws are the relation between pressure, volume, and temperature of the gas. The relation between the pressure and the volume of the gas is given by Boyle's law.
What is Boyle's law?Boyle's law gives the relation between the pressure and the volume of the gas and states that the pressure is in the inverse relationship with the volume of the gas.
When the pressure of the gas is increased the volume of the gas decreases, similarly the decreased pressure of gas results in an increased volume of gas.
Boyle's law is given as,
\(\rm V = \rm constant (\dfrac{1}{P})\)
and,
\(\rm P_{1}V_{1} = \rm P_{2}V_{2}\)
Boyle's law is only true if the moles of the gas (n) and the temperature (T) of the gaseous system are constant.
Therefore, pressure and volume are in indirect relation and the moles and the temperature are constant in Boyle's law.
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what is the voltmeter reading this time?
A chemical equation can be used to solve stoichiometry problems provided that it....
indicates only the forward reaction and not the reverse.
indicates that reactants are in the gas phase and are not solids or liquids.
includes the coefficients that are needed for balancing the equation.
includes the state of matter after each substance.
Answer:
includes the coefficients that are needed for balancing the equation.
Explanation:
A chemical equation can be used to solve stoichiometry problems provided that it includes the coefficients that are needed for balancing the equation.Hence, Option (C) is Correct.
What is Balanced Equation ?
An equation that has an equal number of atoms of each element on both sides of the equation is called a balanced chemical equation, i.e., the mass of the reactants is equal to the mass of the products.
Therefore, A chemical equation can be used to solve stoichiometry problems provided that it includes the coefficients that are needed for balancing the equation.Hence, Option (C) is Correct.
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Identify the elements that make up water and ozone .Name the element common between the two molecules .
Answer: Water is made up of elements hydrogen and oxygen. Ozone is made up of element oxygen. The common element between them is oxygen.
Explanation:
Element is a pure substance which is composed of atoms of similar elements. It can not be decomposed into simpler constituents using chemical reactions.Example: Hydrogen (H)
Water and ozone are compounds which are formed by the combination of elements in fixed ratio by mass.Water and ozone have molecular formulas of \(H_2O\) and \(O_3\) respectively.Water is made up of elements hydrogen (H) and oxygen (O). Ozone is made up of element oxygen (O).
Thus the common element between them is oxygen (O).
Calculate the K_a of a weak acid HA if a 0.19M aqueous solution of HA has a pH of 4.52 at 25∘
C. A. 6.5×10^−9
B. 4.8×10^−9
C. 1.8×10^−5
D. 3.2×10 ^−3
E. 2.1×10 ^−8
The K_a of the weak acid HA in a 0.19M aqueous solution with a pH of 4.52 at 25∘C is approximately 6.5×10^−9.
What is the K_a value for the weak acid HA in the given solution?The K_a value represents the acid dissociation constant, indicating the extent of ionization of the weak acid HA in water. In this case, the given pH allows us to determine the concentration of H+ ions in the solution. By applying the equation for the dissociation of the weak acid, we can calculate the K_a value. The negative logarithm of the K_a value provides the pH of the solution. In this scenario, the pH is 4.52, which corresponds to a H+ concentration of 3.16×10^−5 M. By substituting the known values into the equation, we find that the K_a value for HA is approximately 6.5×10^−9.
The pH of a solution provides information about its acidity or basicity. It is a measure of the concentration of hydrogen ions (H+) present. A lower pH value indicates a higher concentration of H+ ions and a more acidic solution. In the case of weak acids, such as HA, the equilibrium between the undissociated acid and its conjugate base determines the pH and K_a value. The K_a value represents the equilibrium constant for the dissociation of the weak acid. It quantifies the degree of ionization of the acid in water. By knowing the pH and using the appropriate equations, we can calculate the K_a value and further understand the behavior of weak acids in solution.
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matter graphic organizer
The rate of the reaction described by the equation 2CO(g) → CO2(g) + C(s) was studied by injecting some CO(g) into a reaction vessel and measuring the total pressure, maintaining a reaction volume constant. Assuming only CO(g) is present Initially, determine the value of the velocity constant of the reaction and the reaction rate expression.
The rate of the reaction between 2CO(g) and CO₂(g) + C(s) can be determined by injecting some CO(g) into a reaction vessel and measuring the total pressure while maintaining the reaction volume constant.
only CO(g) is present initially, the value of the velocity constant and the reaction rate expression can be determined. The velocity constant, also known as the rate constant, is a measure of how fast the reaction proceeds at a given temperature.
The reaction rate expression, on the other hand, represents the relationship between the reactant concentrations and the rate of the reaction.
By measuring the pressure of the reaction mixture over time, the velocity constant and reaction rate expression can be calculated using mathematical formulas and graphs.
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The pressure P (in kilopascals), volume V (in liters), and temperature T (in kelvins) of a mole of an ideal gas are related by the equation PV=8.31T. Find the rate at which the volume is changing when the temperature is 295 K and increasing at a rate of 0.05 K/s and the pressure is 16 and increasing at a rate of 0.02kPa/s. Please show your answers to at least 4 decimal places.
dV/dt =
The rate at which the volume is changing, represented as dV/dt, is given by the equation (0.4155 - 0.32V(t)) / 16, where V(t) is the volume, and the values are substituted accordingly.
To find the rate at which the volume is changing, we need to differentiate the given equation with respect to time (t) using the chain rule:
PV = 8.31T
Differentiating both sides with respect to time:
P(dV/dt) + V(dP/dt) = 8.31(dT/dt)
We are given:
dT/dt = 0.05 K/s (rate of temperature change)
(dP/dt) = 0.02 kPa/s (rate of pressure change)
P = 16 kPa (initial pressure)
T = 295 K (initial temperature)
Substituting the given values into the equation, we have:
16(dV/dt) + 16V(0.02) = 8.31(0.05)
Simplifying the equation:
16(dV/dt) + 0.32V = 0.4155
Rearranging the equation to solve for dV/dt:
16(dV/dt) = 0.4155 - 0.32V
(dV/dt) = (0.4155 - 0.32V) / 16
To find the rate at which the volume is changing when T = 295 K, we substitute V = V(t) and T = 295 into the equation:
(dV/dt) = (0.4155 - 0.32V(t)) / 16
Calculating the value of (dV/dt) at the given temperature and rounding to at least 4 decimal places will provide the final answer.
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What is the first action that need to happen for light reactions to start? a)Light energy from the sun is transferred to the thylakoid b)Accessory pigments absorb photons c)Energy reaches the reaction center d)ATP is produced
The first action that needs to happen for light reactions to start is b) Accessory pigments absorb photons. In the process of photosynthesis, light reactions occur in the thylakoid membranes of chloroplasts.
The first step in these reactions is the absorption of light energy by accessory pigments, such as chlorophyll b and carotenoids. These pigments are capable of capturing photons of light at different wavelengths. When photons are absorbed by the accessory pigments, they transfer their energy to the reaction center chlorophyll a molecule.
After the energy reaches the reaction center, it initiates a series of electron transfer reactions, leading to the generation of ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate) molecules, which are used in the subsequent stages of photosynthesis.
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Mayo clinic suggests up the maximum amount of caffeine a healthy adult should drin in a day is equivalent to four cups of brewed coffee, 10 cand of cola or two "energy shot" drinks. If you were to drink 4 cups of that coffee that would be 32 oz of coffee. If on did the math that would be a volume of 0.956 liters of Coffee.(The density of the Caffeine is
1.23g/cm^3 and the Chemical formula is C8H10N4O2)
How much does the coffee weigh in grams?
How many moles are in the coffee?
How many Atoms (aka molecules) of coffee are there?
The mass of coffe is 1176 g. The number of moles of caffiene is 6 moles and the number of caffiene molecules is 3.6 * 10^24 molecules
What is coffe?Coffe is an energy drink that is commonly made of caffiene. It is the active ingridient in coffe.
Now we have;
Volume of the coffe = 0.956 liters or 956 cm^3
density of the coffe = 1.23g/cm^3
Mass of coffe = 1.23g/cm^3 * 956 cm^3 = 1176 g
Number of moles of caffiene= mass /molar mass = 1176 g/194 g/mol = 6 moles
Now;
If 1 mole contains 6.02 * 10^23 molecules
6 moles contains 6 moles * 6.02 * 10^23 molecules/1 mole
= 3.6 * 10^24 molecules
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Compared to atoms of metals, atoms of nonmetals generally
A)have higher electronegativities
B)have lower first ionization energies
C)conduct electricity more readily
D)lose electrons more readily
Compared to atoms of metals, atoms of nonmetals generally conduct electricity more readily. Therefore, option C is correct.
What are metal atoms ?The term metal atom is defined as an atom of an element that exhibits typical metallic properties, being typically shiny, with high electrical and thermal conductivity.
Metallic bonds form when the charge is spread over a greater distance than the size of individual atoms in solids. Most left elements in the periodic table form metallic bonds, such as zinc and copper.
Metals are defined as elements to the left of the line. Elements just to the right of the line have both metal and nonmetal properties and are referred to as metalloids. Nonmetals are elements at the far right of the periodic table.
Thus, option C is correct.
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Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous.
a. wine
b. beef stew
c. iron
d. carbon monoxide