3 years ago

Calculate the pH of a 0.010 M NaNO2 solution.

Chemistry

1 answer:

ryzh [129]3 years ago

3 0

Answer:

Calculate the pH of 0.010 M HNO2 solution. The K, for HNO2 is 4.6 x 104

Answer: pH = 2.72

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When the solutes are evenly distributed throughout a solution, we say the solution has reached _______. when the solutes are eve

german

If the solutes are dispersed evenly in their particular solvent we say that the solution has reached diffusion I believe.

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3 years ago

What SI unit is used to measure the number of representative particles in a substance?

trapecia [35]

Its D- Mole

Hope this helps : )

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3 years ago

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What is equal to the number of particles in 24 grams of carbon-12? 2 moles 2:1 mole ratio 2:1 molar mass 1:2 molar volume

mariarad [96]

Answer:

The answer to your question is 2 moles of Carbon

Explanation:

Carbon-12 means it has a molecular mass of 12g / mol. Mol is defined as the number of grams of an atom in one mol.

To solve this problem, we use proportions

12 g of Carbon ---------------- 1 mol of Carbon

24 g of Carbon -------------- x

x = ( 24 g x 1 mol ) / 12 g

x = 24 / 12

x = 2 mol of Carbon

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3 years ago

What is the mass of 3.2 moles of Sulfur?

FinnZ [79.3K]

Answer:

820.864 g

Explanation:

1) The atomic mass of sulfur (found from the periodic table) is 32.065 amu. Use this mass to find the molar mass of Sulfur. Sulfur is S8 so the molar mass of sulfur is:

8 × 32.065 = 256.52 g/mol

2) To find the mass use the formula:

m = n × M where m is the mass, n is the number of moles, and M is the molar mass.

$m \: = 3.2 \times 256.52$

$m = 820.864 \: g$

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3 years ago

Which reaction below represents the second ionization of sr?

PIT_PIT [208]

e.sr⁺(g) → sr2⁺(g) + e⁻
When remove first electron became Sr⁺, second Sr²⁺.

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4 years ago

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