Convert 1.500 L to cm3. To the correct number of significant figures.

Answer:

oxygen, nitrogen, carbon, boron

Explanation:

Answer: The answer is C. 0.1MCaCl2

Explanation:

We have AgCl whose least solubility is to be determined at 25degree Celsius

so upon looking at the options given we observe C 0.1MCaCl2 and D 0.1MHCl both have chlorine ions present and we know that here common ion effect will happen that causes decreases the solubility of the AgCl here

but when Calcium chloride dissociates it gives 2 moles of chlorine ions

\(CaCl2\)→\(Ca^+2 + 2Cl^-\)

so chlorine ion will be present in more amount \(2*0.1\\\)=\(0.2\) as compared to the chlorine produced by HCl

\(HCl\)→\(H^+ +Cl^-\) only 1 mole of chlorine is produced.

Hence AgCl will be least soluble in 0.1M CaCl2

Adding sulfuric acid to water will decrease the pH dramatically.option 4.

Sulfuric acid is a strong acid and is a type of acid rain. When five drops of sulfuric acid are added to a sample of water, the pH of water will decrease dramatically. This is because sulfuric acid is a strong acid that is capable of dissociating completely in water, producing a high concentration of hydrogen ions (H+) and sulfate ions (SO4²-). This increase in hydrogen ion concentration lowers the pH of water and makes it more acidic.Acid rain is a type of rain that has a pH lower than 5.6, which is the normal pH of rainwater. The acidity of acid rain is caused by the presence of strong acids like sulfuric acid and nitric acid. These acids are produced when sulfur dioxide (SO2) and nitrogen oxides (NOx) are emitted into the atmosphere by human activities like burning fossil fuels and industrial processes.When these gases react with water, they form sulfuric acid and nitric acid, respectively, which then fall to the ground as acid rain.

Acid rain can have harmful effects on the environment, including the acidification of lakes and rivers, the degradation of forests and soils, and the corrosion of buildings and monuments.To conclude, when five drops of sulfuric acid are added to a sample of water, the pH of water will decrease dramatically.option 4.

for such more questions on acid

https://brainly.com/question/27915098

#SPJ8

Answer:

oxygen and Carbon dioxide

Answer:

\(\huge\boxed{\sf M = 0.06\ M}\)

Explanation:

No. of moles = n = 0.03 mol

Volume = v = 500 ml = 0.5 L

Molarity = M = ?

M = n / v

Put the given data in the above formula.

M = 0.03 / 0.5

\(\rule[225]{225}{2}\)

Answer:

+4

Explanation:

Oxidation number of neutral compound is 0

Oxidation number of hydrogen in methane is -1

C + (-1×4) = 0

C - 4 = 0

C = 4

Based on the data shown in the graph, the rate of reaction is directly proportional to the temperature of a reaction.

The speed at which a chemical reaction occurs is called the reaction rate or rate of reaction. The rate of a reaction is proportional to the increase in product concentration per unit time and the decrease in reactant concentration per unit time.

The rate of a reaction is affected by the following:

the temperature of the reaction - the rate of reaction is directly proportional to the temperature of a reaction. Hence, the rate of a reaction increases with an increase in temperature.

presence of a catalyst - the rate of a reaction increases with the addition of a catalyst. A catalyst speeds up the rate of a reaction.

the surface area of the reactants - the rate of a reaction increases with an increase in the surface area of the reactants,

Learn more about the rate of reaction at: https://brainly.com/question/25724512

#SPJ1

Answer:

At higher temperatures, chemical reactions occur more quickly.

Explanation:

edmentum

Answer:

H2CO3 = 2H+ + CO3-

Explanation:

It is simply what carbonic acid breaks down into when placed in water. Since carbonic acid is made up of H and CO3, these are the products.

The molecular formula of the compound is P₂O₅.

To determine the molecular formula for a compound with the given percent compositions, we can assume a certain mass for the compound and calculate the number of moles for each element based on its percentage. Then, we can determine the simplest whole-number ratio of the elements to find the molecular formula.

Let's assume a mass of 100 grams for the compound. From the given percent compositions, we have 43.7 grams of phosphorus (P) and 56.3 grams of oxygen (O).

Next, we calculate the moles of each element using their molar masses. The molar mass of phosphorus (P) is 30.97 g/mol, and the molar mass of oxygen (O) is 16.00 g/mol.

The moles of phosphorus can be calculated as:

moles of P = mass of P / molar mass of P = 43.7 g / 30.97 g/mol ≈ 1.41 mol

The moles of oxygen can be calculated as:

moles of O = mass of O / molar mass of O = 56.3 g / 16.00 g/mol ≈ 3.52 mol

Now, we find the simplest whole-number ratio of the elements by dividing the moles of each element by the smallest number of moles (1.41 mol in this case):

P:O ≈ 1.41 mol / 1.41 mol : 3.52 mol / 1.41 mol ≈ 1:2.5

Since we need whole-number ratios, we can multiply both numbers by 2 to get a whole number for oxygen:

P:O ≈ 2:5

Therefore, the molecular formula of the compound is P₂O₅.

for more such question on molecular formula

https://brainly.com/question/26388921

#SPJ8

The concentration of Oxalic Acid is 0.2625 M.

A kinetic experiment is conducted to determine the rate law of a reaction. The concentration of Oxalic Acid can be calculated using the given amount of the reactants and the volume of the test tube. A balanced chemical equation can be used to find the stoichiometric ratio of the reactants in the given reaction.The balanced chemical equation for the reaction is:5 H2C2O4 + 2 KMnO4 + 3 H2SO4 → 10 CO2 + 2 MnSO4 + 8 H2OThe stoichiometric ratio between Oxalic Acid and Potassium Permanganate is 5:2. The Oxalic Acid is the limiting reactant, and Potassium Permanganate is in excess.The amount of Oxalic Acid in the solution can be calculated using the formula:molarity = moles of solute / volume of solution in L.The moles of Oxalic Acid can be calculated using the formula:moles of H2C2O4 = Molarity of H2C2O4 x Volume of H2C2O4 in L= 0.525 M x 0.006 L= 0.00315 moles.

The volume of the solution after the addition of the reactants is:6.00 mL of 0.525 M Oxalic Acid + 4.00 mL of distilled water + 2.00 mL of 0.200 M KMnO4= 12.00 mLThe concentration of Oxalic Acid in the solution can be calculated using the formula:Molarity of H2C2O4 = moles of H2C2O4 / volume of solution in L= 0.00315 moles / 0.012 L= 0.2625 M.

for such more questions on Acid

https://brainly.com/question/27915098

#SPJ8

Answer:

a) water expands when it freezes and damages the cell wall.

Explanation:

We know that most liquids expand when heated and contract when cooled. Water does not behave in the same way.

Water contracts on cooling from any temperature until 4°C when it begins to expand until 0°C. Hence a given mass of water has its least volume and highest density at 4°C.

Hence, fresh vegetables with high water content do not freeze well because water expands when it freezes and damages the cell wall.

Answer:

Scientists use the scientific method to make testable explanations and predictions about the world. A scientist asks a question and develops an experiment, or set of experiments, to answer that question. Engineers use the engineering design process to create solutions to problems.

Answer:

The Atomic Number of an element is always equal to the Number of protons. The mass Number of an element is equal to the Protons added to the Neutrons. The element Sodium has an atomic Number of 11, and an average at

The element Sodium has an atomic number of 11 and an average atomic mass of 22.98 which makes the mass number 23.

Therefore

An atomic number of 11 means this atom will have 11 protons.

A mass number of 23 means 23 - 11 this atom will have 12 neutrons.

Since this atom is neutral the positive protons must be equal to the negative electrons. This atom will have 11 electrons.

Protons 11

Neutrons 12

Electrons 11

Answer:

Explanation:

i wish i can help

Answer:

If it's cold it's going to be E, and if it's the hottest it's going to be C.

Explanation:

0.1 mol of sodium hydroxide (NaOH) would react exactly with 7.5 g of the diprotic acid \(H_{2}\)A.

What is Molar Mass?

Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol). It is calculated by adding up the atomic masses of all the atoms in a molecule or the formula mass of all the ions in an ionic compound.

The balanced chemical equation for the reaction between diprotic acid, \(H_{2}\)A, and sodium hydroxide, NaOH, can be represented as follows:

2\(H_{2}\)A + 2 NaOH -> \(Na_{2}\)A + 2 \(H_{2}\)O

From the balanced equation, we can see that 2 moles of \(H_{2}\)A react with 2 moles of NaOH to produce 1 mole of \(Na_{2}\)A and 2 moles of water (\(H_{2}\)O).

First, we need to calculate the number of moles of \(H_{2}\)A in 7.5g using the formula:

moles = mass / molar mass

moles of \(H_{2}\)A = 7.5g / 150 g/mol = 0.05 mol

Since diprotic acid, \(H_{2}\)A, reacts in a 1:2 ratio with NaOH, we need to multiply the moles of \(H_{2}\)A by 2 to determine the moles of NaOH required for complete reaction:

Moles of NaOH = 2 * Moles of \(H_{2}\)A

Moles of NaOH = 2 * 0.05 mol

Moles of NaOH = 0.1 mol

0.1 mol of sodium hydroxide (NaOH) would react exactly with 7.5 g of the diprotic acid \(H_{2}\)A.

Learn more about Molar Mass from the given link

https://brainly.com/question/837939

#SPJ1

Answer:

Assuming that the addition of 5.00 mL of 0.011 M HCl to 50.00 mL of pure water does not significantly affect the volume of the solution:

Calculate the number of moles of HCl added:

moles HCl = concentration x volume = 0.011 mol/L x 0.00500 L = 5.50 x 10^-5 mol

Calculate the total volume of the solution:

total volume = 50.00 mL + 5.00 mL = 55.00 mL = 0.055 L

Calculate the concentration of H+ ions in the solution:

[H+] = moles HCl / total volume = 5.50 x 10^-5 mol / 0.055 L = 1.00 x 10^-3 M

Calculate the pH of the solution:

pH = -log[H+] = -log(1.00 x 10^-3) = 3.00

Therefore, the pH of the solution is 3.00.

Explanation:

It will it take 0.684 billion year for 10% of the U−238 atoms in a sample of U−238 to decay.  If a sample of U−238 initially contained 1.4×1018 atoms when the universe was formed 13.8 billion years ago, there gonna be 1.67 x 10¹⁷ left today.

Half life (t1/2) = 4,5 billion years

10% to decay = 90 % remaining

ln (C/C₀) = - kt

where k is constant

t is time

K = ln(2) / t1/2 = ln(2) / 4.5

so C/C₀ = 0.9

a.)ln (C/C₀) = - kt

ln (0.9) = - ln(2) / 4.5  x t

t = 0.684 billion years

b.) C₀ in initial sample = 1.4 x 10¹⁸

t = 13.8 billion years

ln (C/C₀) = - kt

ln (C/C₀) = - 0.15403 x 13.8

ln (C/C₀) = -2.125

C= C₀ e⁻² ¹²⁵

C = 1.4 x 10¹⁸ x 0.1194 = 1.67 x 10¹⁷

learn more about half life at https://brainly.com/question/27752795

#SPJ4

Cylinder

Cylinder A cylinder is a solid figure with two parallel congruent circular bases.

Answer:

Cylinder

Explanation:

A cylinder is a solid figure with two parallel congruent circular bases.

The following are categorized into polar or nonpolar molecules:

a) Beryllium chloride (BeCl₂) is a nonpolar molecule. The Be-Cl bond is polar due to the electronegativity difference between beryllium and chlorine, but the molecule is linear with the two polar bonds pointing in opposite directions, resulting in a net dipole moment of zero.

b) Hydrogen sulphide (H₂S) is a polar molecule. The H-S bond is polar due to the electronegativity difference between hydrogen and sulfur, and the molecule has a bent shape, resulting in a net dipole moment that is not zero.

c) Sulphur trioxide (SO₃) is a nonpolar molecule. The S-O bonds are polar due to the electronegativity difference between sulfur and oxygen, but the molecule is trigonal planar with the three polar bonds pointing in different directions, resulting in a net dipole moment of zero.

d) Water (H₂O) is a polar molecule. The H-O bond is polar due to the electronegativity difference between hydrogen and oxygen, and the molecule has a bent shape, resulting in a net dipole moment that is not zero.

e) Trichloromethane (CHCl₃) is a polar molecule. The C-Cl bonds are polar due to the electronegativity difference between carbon and chlorine, and the molecule has a tetrahedral shape, resulting in a net dipole moment that is not zero.

Find out more on polar or nonpolar here: https://brainly.com/question/17118815

#SPJ1

Answer:

Explanation:

Salt (sodium chloride) is made from positive sodium ions bonded to negative chloride ions. Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions.

Answer:

b. Use an AD/AS diagram to show how a decrease in the inflation target can keep inflation and short-run output from starting to rise in 2021. Explain your diagram and what it reveals about monetary policy.

a) In 25 grams of water, the solubility is 92/4 = 23 grams, so adding 24 grams will produce a supersaturated solution.

b) In 50 grams of water, the solubility is 92/2 = 46 grams, so adding 47 grams will produce a supersaturated solution.

c) In 150 grams of water, the solubility is 92(1.5) = 138 grams, so adding 127 grams will produce an unsaturated solution.

The magnetic quantum number (ml) represents the orientation of the orbital in three-dimensional space the only possible value of the magnetic quantum number ml for a 1s electron is 0.

Quantum is the smallest possible unit of a physical quantity, such as energy or momentum. It is a fundamental concept in quantum mechanics, which is the branch of physics that deals with the behavior of matter and energy at the atomic and subatomic level.

The idea of quantization was first proposed by Max Planck in 1900, when he discovered that energy is emitted and absorbed in discrete units called "quanta" when studying the behavior of light and blackbody radiation. Later, this idea was extended to other physical quantities, such as the momentum and position of particles.

According to quantum mechanics, the behavior of particles and systems cannot be fully described using classical mechanics, which assumes that particles have definite positions and velocities at all times. Instead, the behavior of particles and systems is described using wave functions, which represent the probability of finding a particle at a given position and time.

The principles of quantum mechanics have important applications in many areas of physics, including atomic and molecular physics, condensed matter physics, and particle physics. They are also the basis.

To know more about quantum visit :

https://brainly.com/question/16746749

#SPJ1

Answer:

28.12 kg

Explanation:

Here we are given that the density of copper is 8.92 g/ cm³ .

\(\sf \longrightarrow \rho_{(copper)}= 8.92 g/cm^3\\ \)

And we are interested in finding out the mass of the given block . The dimensions of the block is 0.052m × 311mm × 19.5 cm .

\(\sf \longrightarrow Volume_{cuboid}= length * breadth * height \\ \)

\(\sf \longrightarrow Volume = (0.052)(100) * (311\div 10) *(19.5) cm^3 \\ \)

\(\sf \longrightarrow Volume = 5.2 * 31.1 * 19.5 cm^3 \\ \)

\(\sf \longrightarrow Volume = 3153.54 cm^3\\ \)

Now we may use Unitary Method to find out the mass of the block as ,

Mass of 1cm³ of copper is 8.92 g .

Mass of 3153.54 cm³ of copper will be 8.92*3153.54 g = 28129.57 g

\(\sf \longrightarrow \underline{\boxed{\bf Mass_{Cu}= 28.12 \ kg }} \\ \)