What is the mass of 6. 02 x 10^22 molecules of fluorine gas at stop
Answers
Answer:
3.7996 g
Explanation:
From the number of molecules we can find the number of moles of Fluorine gas (F2) and multiply by Fluorine Gas' molecular weight. Fluorine gas is F2,
F = 18.998g/mol.
F2 (g) = 18.998*2 =37.996g F2(g)/mol
1 mol = 6.02 x 10^23 molecules
\(\frac{6.02*10^{22} molecules}{6.02*10^{23}molecules / mole }\\\\ = 0.1 mole\)
0.1 mol x 37.996g F2 (g) / mol
3.7996 g F2
Related Questions
cientific Investigations
7
Katrina finds the following passage in a science textbook
There are many ways to conserve water. One way that people can save water is to reuse it. For example, instead of pouring
the old water from a pet's bowl down the sink, use it to water a plant. Another way to cut down on water use is to collect
rainwater A large barrel can be placed under a downspout to catch the rain. The collected rainwater can be used to wash a car
or water the lawn A third way to save water is to choose outdoor water activities wisely. Instead of playing in the sprinklers, swim
in a pool The sprinklers must run water continuously, but once a pool is filled, the water can be used again and again. One last
way to prevent water waste is to stop flushing unnecessary items down the toilet. Toilets use a lot of water when they flush. Do
not flush insects or used Kleenex down toilets. Following these suggestions will save gallons of water
What is this passage suggesting about tap water?
It has more energy than hydrogen gas
B
it is not an important resource
C. It is a limited resource
It is an unlimited resource
Answers
Answer:
C, it is a limited resource.
Explanation:
A solution of NaCl was prepared in the following manner: 0.0842 g of NaCl is massed out on an analytical balance. The solid is transferred to a 25.00 mL volumetric flask. Deionized water is added to the flask such that the bottom of the meniscus is at the line. A 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask using a volumetric pipet and diluted to volume. 6. Calculate the concentration of NaCl in the resulting solution in mg/L NaCl. (answer = 67.4 mg/L) 7. Calculate the concentration of NaCl in the resulting solution using propagation of error through the calculation. Use the manufacturer's tolerance values as the absolute error. The tolerances can be found in Chapter 2 of the Harris text. Assume a Class 1 balance and Class A glassware. Treat the tolerances as random error. (answer = 67.4+0.4 mg/L) 8. Identify 2 possible sources of random (indeterminate) error. Identify 2 possible sourses of systematic (determinate) error.
Answers
Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl
To calculate the concentration of NaCl in the resulting solution in mg/L NaCl, we can use the formula; Concentration (mg/L) = (Mass of solute ÷ Volume of solution in L) × 1000 g / 1 mg NaCl is present in the stock solution of 25 mL. So, the mass of NaCl in the solution would be;0.0842 g ÷ 25 mL = 0.00337 g/mL. Now, in the resulting solution, a 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask and diluted to volume. Therefore, the volume of the resulting solution is 50.00 mL. We will substitute these values in the formula, Concentration (mg/L) = (0.00337 g/mL ÷ 50 mL) × 1000 g / 1 mg concentration (mg/L) = 67.4 mg/L. Therefore, the concentration of NaCl in the resulting solution in mg/L NaCl is 67.4 mg/L.7. Concentration = 67.4 mg/LTolerance = 4.28 mg/LTotal concentration = 67.4 + 4.28 mg/L = 71.68 mg/LWe round off this value to one decimal place; Total concentration = 71.7 mg/LTherefore, the concentration of NaCl in the resulting solution using propagation of error through the calculation is 67.4+0.4 mg/L.8. Two possible sources of random (indeterminate) error in the experiment are; Errors in temperature measurement. Errors in measurement of water volume. Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl.
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If you can answer this you a OG
Calculate the new volume if 12.78 L of a gas at -50*C is heated to a temperature of 28*C
Answers
When the gas is heated from -50°C to 28°C, the new volume is approximately 17.24 L.
To calculate the new volume of a gas when it is heated from -50°C to 28°C, we can use the combined gas law, which relates the initial and final conditions of temperature and volume.
The combined gas law is expressed as:
(P1 * V1) / T1 = (P2 * V2) / T2
Where:
P1 = Initial pressure
V1 = Initial volume
T1 = Initial temperature in Kelvin
P2 = Final pressure (assumed constant in this case)
V2 = Final volume (to be calculated)
T2 = Final temperature in Kelvin
First, we need to convert the initial and final temperatures from Celsius to Kelvin:
Initial temperature in Kelvin (T1) = -50°C + 273.15 = 223.15 K
Final temperature in Kelvin (T2) = 28°C + 273.15 = 301.15 K
Since the pressure is assumed to be constant, we can simplify the equation:
(V1 / T1) = (V2 / T2)
Now we can substitute the given values into the equation:
(12.78 L / 223.15 K) = (V2 / 301.15 K)
Cross-multiplying and solving for V2:
V2 = (12.78 L * 301.15 K) / 223.15 K
V2 ≈ 17.24 L
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what does 'potable water' mean?
Answers
Answer:
Potable water, also known as drinking water, comes from surface and ground sources and is treated to levels that that meet state and federal standards for consumption.
If one gram of a Na2CO3 and NaHCO3 mixture was dissolved in water to
create a clear solution, 24. 20 mL of 0. 10 M HCl would be required to attain
the phenolphthalein endpoint. What is the percentage by mass of NaHCO3 in
the mixture?
Answers
The percentage by mass of NaHCO₃ in the mixture is 57.53%.
Find the percentage by mass?To determine the percentage by mass of NaHCO₃ in the mixture, we need to consider the stoichiometry of the reaction between NaHCO₃ and HCl. The balanced chemical equation for the reaction is:
NaHCO₃ + HCl → NaCl + H₂O + CO₂
From the equation, we can see that one mole of NaHCO₃ reacts with one mole of HCl. The given information states that 24.20 mL of 0.10 M HCl (0.0242 moles) is required to reach the phenolphthalein endpoint.
Since the ratio between NaHCO₃ and HCl is 1:1, the moles of NaHCO₃ in the mixture are also 0.0242.
The molar mass of NaHCO₃ is approximately 84.01 g/mol. To calculate the mass of NaHCO₃, we multiply the moles of NaHCO₃ by its molar mass:
Mass of NaHCO₃ = 0.0242 mol * 84.01 g/mol = 2.04 g
The percentage by mass of NaHCO₃ in the mixture is then calculated as:
Percentage by mass = (mass of NaHCO₃ / mass of mixture) * 100
= (2.04 g / 3.54 g) * 100
= 57.53%
Therefore, the percentage by mass of NaHCO₃ in the mixture is 57.53%.
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Order the following in terms of decreasing ionization energy:
N, F, C,O,B
Answers
Answer:
F, N O, C, B
Explanation:
Ionization on the periodic table, goes from left to right, so in order to decrease in ionization, you go right to left.
Therefore leading to (F)luorine, (N)itrogen, (O)oxygen, (C)arbon, and (B)oron
What is the van't hoff factor of C7H7NO?
Answers
Answer:
i = 1
Explanation:
Van't Hoff factor (i) is explained as the number of ions dissolved in solution.
It is needed to determine colligative properties which depend on the amount of solute.
C₇H₇NO is an organic compound → benzamide
All the organic compound have 1, as Van't Hoff factor.
In order to predict i, you consider ionic salts. For example:
AlCl₃
CaCl₂
NH₄NO₃
When you dissociate them, you determine i:
AlCl₃ → Al³⁺ + 3Cl⁻ i =4
CaCl₂ → Ca²⁺ + 2Cl⁻ i = 3
NH₄NO₃ → NH₄⁺ + NO₃⁻ i =2
The van't Hoff's factor of C₇H₇NO is 1
Van't Hoff factorThe Van't Hoff factor denoted with the symbol i is the number of ions dissolved in solution.
Non electrolyte (such as organic compounds) generally have van't Hoff's factor as 1The Van't Hoff's factor for ionic compounds varies with the number of ions in the solution. How to determine the Van't Hoff's factor for C₇H₇NOC₇H₇NO (benzamide) is an organic compound and as such, it have a Van't Hoff's factor of 1
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Which statements accurately describe volume? Check all that apply.
1. Volume is a physical property of an object.
2. Volume is measured using a balance.
3. The volume of a solid changes with the shape of the container.
4. One unit of volume is the milliliter.
5. Liquids and solids have constant volume.
Answers
Answer:
the answer is the number three
Answer: the right answer is 1,4&5
What is the pH and pOH of a 1.2 x 10 M HBr solution?
Answers
-log(1.2x10^-3) = 2.92 = pH
14 - 2.92 = 11.08 = pOH
socratic
studycom
what element has two electrons in its 4d sublevel?
Answers
The element that has two electrons in its 4d sublevel is Ruthenium (Ru) with the atomic number of 44.
Ruthenium (Ru) is a rare transition metal from the platinum group of the periodic table. It is a hard, brittle, silvery-white metal with a slight bluish tint and an atomic number of 44. Ruthenium is one of the densest materials, and it has four stable isotopes. It is commonly found in ores containing other platinum metals.
Ruthenium is frequently used in electrical contacts due to its hardness, wear resistance, and low contact resistance. It is also utilized in some alloys with platinum and other platinum-group metals to make wear-resistant electrical contacts. Ruthenium can also be used as a catalyst in some chemical reactions. It can oxidize and reduce many molecules, making it useful in various oxidation-reduction reactions.
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Which of 2 of these will have a single covalent bond? N2, H2, O2, F2
Answers
Answer:
H2 & F2
Explanation:
A covalent bond is formed when an electron is shared between two atoms. The two electrons of the covalent bond are positioned between the nuclei of the both bonding atoms. The electron pair of the bond may be equidistant from the nucleus of the two atoms or nearer to the nucleus of one of the bonding atoms than the other depending on the relative electro negativities of the both bonding atoms.
For homonuclear covalent bonds, there is no electro negativity difference between the bonding atoms. A single line may be used to indicate the shared electron pair between the two atoms.
Hydrogen and fluorine form homonuclear covalent diatomic compounds in which only a single electron pair is shared between bonding atoms. A single covalent bond is found connecting the two bonding atoms, hence the answer.
Hydrogen (H), oxygen (O), and Nitrogen (N) are all examples of which of the following?
all of these are correct
elements
compounds
molecules
Answers
Answer:
elements
Explanation:
compounds and molecules contain more than one elements.
True or False: Passive transport occurs when molecules move from an area of low concentration to high concentration.
Answers
False, Bc my sister said it was. Don’t worry she smart
Hard water stains in sinks and showers can be caused by a buildup of solid calcium carbonate. These stains can be removed by bathroom cleaners containing acids such as aqueous hydrochloric acid, which reacts with the calcium carbonate to form carbon dioxide gas, aqueous calcium chloride and liquid water. a) Write a balanced equation for this reaction
Answers
Answer:
CaCO3 + 2HCl ---> CaCl2 + H2O + CO2
Explanation:
The reaction between solid calcium carbonate and a mineral acid such as aqueous HCl is a neutralization reaction and occurs with the evolution of CO2 gas.
The balanced equation is given below
CaCO3 + 2HCl ---> CaCl2 + H20 + CO2
The product CaCl2 is water soluble which accounts for why the stain is removed, while CO2 gas escapes away from the reaction surface.
Answer:
CaCO3(s) + 2HCl(aq) -------> CaCl2(aq) + 2CO2(g) + H2O(l)
Explanation:
CaCO3(s) + 2HCl(aq) -------> CaCl2(aq) + 2CO2(g) + H2O(l)
When an acid reacts with a metal carbonate a salt, carbon dioxide and water are formed. Hard water usually contain Ca^2+ in the form of Ca(HCO3)2. Minor heating causes CaCO3(calcium carbonate) to deposit on surfaces through which the hard water passes.
Calcium carbonate reacts with acids to produce a calcium salt, water and carbon dioxide: Calcium carbonate + Hydrochloric acid → Calcium chloride + Water + Carbon dioxide. The carbonate radical breaks up into carbon dioxide and oxygen; the oxygen binds with the acid's hydrogen ions to make water; and a solution of calcium chloride remains.
Succinic acid dissociates as follows: H₂C4H4O4+H₂O HC4H4O4 + H3O+ Ka1 = 6.2 × 10-5 HC4H4O4+H₂0 C4H4O42- + H3O+ Ka2 = 2.3 x 10-6 Calculate Kb1 and Kb2 for the following reactions (3 points): C4H4042 + H2O HC4H4O4 + OH- Kb1 = ? HC4H4O4+H₂O H2C4H4O4 + OH- Kb2 = ?
Answers
Kb1 = 1.61 × 10^-10 and Kb2 = 4.35 × 10^-9. The basicity constant, or Kb, is a measure of the strength of a base in a particular chemical reaction. The products of a reaction of a weak base and water with the corresponding acid determine the base constant.
For example, for a given acid and base, Kb1 and Kb2 are the basicity constants for the first and second base dissociations, respectively, of the base. The formulas and charges of the conjugate acid and base, as well as the acid dissociation constants, Ka1 and Ka2, are needed to calculate Kb1 and Kb2.
The following reactions are balanced chemical reactions that represent the dissociation of succinic acid:
Reaction 1: H2C4H4O4(aq) + H2O(l) ⇌ HC4H4O4(aq) + H3O+(aq) Ka1 = 6.2 × 10−5
Reaction 2: HC4H4O4(aq) + H2O(l) ⇌ C4H4O42-(aq) + H3O+(aq) Ka2 = 2.3 × 10−6
The values of Ka1 and Ka2 can be used to calculate Kb1 and Kb2, respectively, using the following equation:
Ka1 × Kb1 = Kw
where Kw is the ion-product constant for water, which is 1.0 × 10−14 at 25°C.
Kb1 can be calculated as follows:
Kw = Ka1 × Kb1
Kb1 = Kw / Ka1
Kw = 1.0 × 10^-14
Ka1 = 6.2 × 10^-5
Kb1 = Kw / Ka1
Kb1 = 1.0 × 10^-14 / 6.2 × 10^-5
Kb1 = 1.61 × 10^-10
Kb2 can be calculated using the same method:
Kw = Ka2 × Kb2
Kb2 = Kw / Ka2
Kw = 1.0 × 10^-14
Ka2 = 2.3 × 10^-6
Kb2 = Kw / Ka2
Kb2 = 1.0 × 10^-14 / 2.3 × 10^-6
Kb2 = 4.35 × 10^-9
Therefore, Kb1 = 1.61 × 10^-10 and Kb2 = 4.35 × 10^-9.
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How many electrons does a phosphorus atom need to achieve a noble gas configuration
Answers
Answer:
Explanation:
In order to have a full shell it needs eight. It is easier to gain three electrons instead of losing five. Therefore phosphorus tends towards P3−
1. What is a common example of a converging mirror?
2. Where must you (the object) stand in front of a converging mirror if you want to see an upright,
virtual image of yourself? What is the size of the image compared to the object?
3. A converging mirror produces no image when the object is at
4. If the centre of curvature in a converging mirror is at 10cm, the focal point will be at
om
Answers
sorry I don't know 4one
i HOPE IT'S HELP
Sodium carbonate (Na2CO3) reacts with acetic acid (CH3COOH) to form sodium acetate (NaCH3COO), carbon dioxide (CO2), and water (H2O). A chemist carries out this reaction in a bomb calorimeter. The reaction causes the temperature of a bomb calorimeter to decrease by 0. 985 K. The calorimeter has a mass of 1. 500 kg and a specific heat of 2. 52 J/g•K. What is the heat of reaction for this system? kJ.
Answers
Explanation:
Mass of bomb calorimeter, m = 1.5 kg = 1500 g
Temperature change of calorimeter, ΔT = - 0.985 K
Specific heat of calorimeter, c = 2.52 J/g K
To Find:
The heat of reaction for this system
Calculation:
The heat of reaction can be calculated by the given formula:
Q = mcΔT
⇒ Q = 1500 × 2.52 × (- 0.985)
⇒ Q = - 3723.3 J (-ve sign shows heat is given by calorimeter)
- So the heat of reaction is -3723.3 J or -3.7233 kJ
Taking into account the definition of calorimetry, the heat of reaction for the system is -3,723.3 J or -3.7233 kJ.
In first place, calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
In this way, between heat and temperature there is a direct proportional relationship.
The constant of proportionality depends on the substance that constitutes the body and its mass, and is the product of the specific heat by the mass of the body.
So, the equation that allows to calculate heat exchanges is:
Q = c× m× ΔT
where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.
In this case, you know:
Q= ? c= 2.52 \(\frac{J}{gK}\) m= 1.500 Kg= 1500 g ΔT= -0.985 K is negative because the temperature decreases.Replacing in the expression to calculate heat exchanges:
Q= 2.52\(\frac{J}{gK}\)× 1500 g× (-0.985 K)
Solving:
Q= -3,723.3 J= -3.7233 kJ
Negative sign shows heat is given by calorimeter.
In summary, the heat of reaction for the system is -3,723.3 J or -3.7233 kJ.
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brainly.com/question/11586486?referrer=searchResults brainly.com/question/24724338?referrer=searchResultsthe orbital hybridization on the carbon atoms in c2h2 is
Answers
The orbital hybridization on the carbon atoms in C₂H₂ (ethyne) is sp hybridization.
In C₂H₂(ethyne or acetylene), the orbital hybridization on the carbon atoms is known as sp hybridization.
Each carbon atom in ethyne forms a triple bond with another carbon atom, giving the compound a linear molecular shape. Each carbon atom goes through sp hybridization in order to accommodate the bonding configuration and ensure optimal orbital overlap.
Two sp hybrid orbitals are created when each carbon atom's two 2s orbitals and one 2p orbital, in this case the 2px orbital, merge during sp hybridization. These sp hybrid orbitals have an angle of 180 degrees between them and are oriented linearly along the carbon-carbon axis.
The 2py and 2pz orbitals, which are the final two 2p orbitals on each carbon atom, are still unhybridized and parallel to the molecular axis. These open-source p orbitals can be used for π-bonding, forming the π bonds in the ethyne molecule.
So, in summary, the orbital hybridization on the carbon atoms in C₂H₂(ethyne) is sp hybridization.
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Why should you use pencil instead of pen when marking on a thin layer chromatography plate?
a. Pencil lead isn't as dark.
b. The components of pen ink will separate along with your sample, while pencil lead will not.
c. Pen ink will not mark on a TLC plate.
d. Pen ink will undergo a chemical reaction with the solvent.
Answers
You should use a pencil instead of a pen when marking on a thin layer chromatography plate because the components of pen ink will separate along with your sample, while pencil lead will not. So, the correct answer is b.
Using a pen to mark on a thin layer chromatography plate can cause the ink components to mix with the sample components, making it difficult to accurately analyze the separation of the components. Pencil lead, on the other hand, is inert and will not interfere with the separation process.
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How does the concentration of soudium thiosulfate affect the rate of reaction with dilute hydrochloric acid?
Your plan should give valid results.
Answers
Answer:
As the concentration of Sodium Thiosulphate increases the length of time for cross to disappear decreases. This is because the increase of concentration of Sodium Thiosulphate will increase the rate of reaction between Hydrochloric acid and sodium Thiosulphate particles.
Explanation:
Logic...
calculate the volume of an object that has a mass of 26.2 g and a density of 6.25g/mL.
Answers
Isotopes (such as hydrogen-1, hydrogen-2, and hydrogen-3) are the atoms of
the same element that differ in:
Answers
Answer:
The number of neutrons in nucleus
what are three different facts about mass
plz tel will give brainlyest
Answers
Answer: all mass takes up space. everything has mass. Theres a unit of mass called a slug thats not the bug!
Explanation:
1) mass is a measure of the body’s inertia
2) mass is measured in kilograms (kg)
3) mass of an object also determines the objects strength of its gravitational attraction to other bodies
Hi I need help!!!!! pleaseeeeeeeee!
Answers
Answer:
yes it chemical to electrical to radiant energy
Explanation:
correct
what is the substance that is formed when the acid react with bases in a neutralization reaction?
Answers
Answer:
Water and Salt
Explanation:
A neutralization reaction occurs when an acid and a base react to produce water and a salt, and it entails the formation of water from the mixture of H+ and OH- ions.
Answer:
NaCl and water is formed when acid reacts with base
PLEASE ANSWER!! DUE TONIGHT!! 10 POINTS!!
Find the density of a cube (to the nearest tenth) with a side of 4 cm. and a mass of 1235 grams. (You do not need to include units in your answer.)
Answers
Answer:
19.3
Explanation:
V=4^3 a^3, to find volume with sides
p= 1235/64, Mass/ Volume= Density
In solution, 20 molecules of a base produce 20 hydroxide ions and 20 molecules of a second base produce 2 hydroxide ions. Based on this information, which of the following statements is true?
Select one:
a. The first base and the second base are of equal strength.
b. The first base is stronger than the second base.
c. The second base is stronger than the first base.
d. The concentration of the first base solution is greater than the concentration of the second base solution.
Answers
The statement that is true concerning the information provided about the base molecule is the first base is stronger than the second base. That is option B.
What is a base?A base is a substance that is capable of producing a hydroxide ion when dissolved in water.
A base can also be used for the production of salt and water when combined with an account d in a neutralisation reaction.
From the solution given,
Frist base: 20 molecules of base= 20 hydroxide ionSecond base: 20 molecules of base = 2 hydroxide ions.A strong base is a base that is completely dissociated in an aqueous solution.
Therefore,the statement that is true concerning the information provided about the base molecule is the first base is stronger than the second base.
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4 gram of NaOH is dissolved in
500 ml of water. What is the
concentration of NaOH in ppm.
Answers
Answer:
your answer is 8000 ppm
At a given temperature the vapor pressures of hexane and octane are 183 mmHg and 59. 2 mmHg , respectively. Calculate the total vapor pressure over a solution of hexane and octane with Xhexane
Answers
The total vapor pressure over a solution of hexane and octane can be calculated using Raoult's law. Raoult's law states that the vapor pressure of a component in a solution is proportional to its mole fraction.
Let Xhexane be the mole fraction of hexane in the solution, and Xoctane be the mole fraction of octane.
According to Raoult's law:
Total vapor pressure = Xhexane * Phexane + Xoctane * Poctane
Given:
Phexane = 183 mmHg
Poctane = 59.2 mmHg
We need to determine Xhexane in order to calculate the total vapor pressure.
Xhexane can be calculated using the formula:
Xhexane = Moles of hexane / Total moles of components
Since we have no specific information about the moles of hexane and octane, we cannot calculate the mole fractions or the total vapor pressure accurately without additional data.
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