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3 years ago

An aqueous solution is 40.0% by mass silver nitrate, AgNO3, and has a density of 1.47 g/mL.

Chemistry

1 answer:

Snowcat [4.5K]3 years ago

3 0

Answer:

Molarity = 3.46 M

Explanation:

Given data:

Percentage of silver nitrate = 40.0%

Density of AgNO₃ = 1.47 g/mL

Molarity of solution = ?

Solution:

40% means out of 100g we have 40 g of AgNO₃ and 60g solvent.

Number of moles of silver nitrate = mass /molar mass

Number of moles = 40 g/ 170 g/mol

Number of moles = 0.235 mol

Volume of solution:

Total mass of solution = 100 g

density = 1.47 g/mL which means there are 1.47 gram into 1 mL.

100 g/1 × 1mL/ 1.47 g × 1 L / 1000 mL

0.068 L

Molarity:

Molarity = number of moles / volume in L

Molarity = 0.235 mol / 0.068 L

Molarity = 3.46 M

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Answer:

Specific heat capacity of A is 1.05J/g°C

Explanation:

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In this question, we have to bodies in contact and there's transfer of energy (heat) between them. The heat loss in one body is equal to the heat gain in another body.

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Mass of A = 6.44g

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Explanation:

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In a chemical reaction, an acid loses a proton to form a conjugate base while a base accepts a proton to form conjugate acid.

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$NH_4^+$ is losing a proton thus it is an acid to form $NH_3$ which is its conjugate base

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