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2 years ago

A 0.02 molar solution of sodium chloride contains 0.1 mole of solute. What is the volume of the solution

Chemistry

1 answer:

Deffense [45]2 years ago

3 0

Answer:

Volume of solution = 5 L

Explanation:

Given data:

Molarity of solution = 0.02 M

Moles of solute = 0.1 mol

Volume of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

by putting values,

0.02 M = 0.1 mol / volume of solution

Volume of solution = 0.1 mol / 0.02 M

Volume of solution = 5 L

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The correct answer is D) Theory

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What is the volume of 1.60 grams of O2 gas at STP? (5 points)

tiny-mole [99]

Answer:

1.12 liters

Explanation:

Calculating number of moles

Molar mass of O₂ = 32 g
n = Given weight / Molar mass
n = 1.6/32
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One mole of O₂ occupies 22.4 L
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2 years ago

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The lattice energy of a salt is related to the energy required to separate the ions. For which of the following pairs of ions is

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Answer: The Lattice energy is the energy required to separate an ionic solid into its component gaseous ions or

It is the energy released when gaseous ions combine to form an ionic solid.

Explanation:

The lattice energy depends on the ionization energies and electron affinities of atoms involved in the formation of the compound. The ionization energies and electron affinities also depends on the ionic radius and charges of the ions involved. As the ionic radius for cations increases down the groups, ionization energy decreases, whereas, as ionic radii decreases across the periods , ionization energy increases. The trend observed for anions is that as ionic radii increase down the groups, electron affinity decreases. Across the period, as ionic radii increases electron affinity increases. Also, as the charge on the ion increases, it leads to an increase in energy requirement/content.

Therefore, for compounds formed from cations and anions in the same period, the highest charged cation and anion will have the highest lattice energy. For example, among the following compounds: Al2O3 (aluminium oxide), AlCl3 (aluminium chloride), MgO, MgCl2 (magnesium chloride), NaCl, Na2O (sodium oxide); Al2O3(aluminium oxide) will have the highest lattice energy, thus will be hardest to break apart because its ions have the highest charge.

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3 years ago

For each of the following redox reactions in the, identify the oxidizing agent and the reducing agent.

NARA [144]

Anywhere between 5sogt2 and 776sogt2

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3 years ago

How many grams of calcium are required to free 8 grams of hydrogen gas from hydrochloride acid, HCl?

Gala2k [10]

Answer:

The answer to your question is 160 g of Calcium

Explanation:

Data

mass of Calcium = ?

mass of Hydrogen = 8 g

reactant = HCl

Process

1.- Write the balanced chemical reaction

Ca + 2HCl ⇒ CaCl₂ + H₂

2.- Look for the atomic number of Calcium and hydrogen

Calcium = 40 g

Hydrogen = 1 x 2 = 2 g

3.- Use proportions to calculate the mass of calcium needed.

40 g of Calcium ---------------- 2 g of hydrogen

x ----------------- 8 g of hydrogen

x = (8 x 40) / 2

x = 320/2

x = 160 g of Calcium

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3 years ago