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8_murik_8 [283]
3 years ago
11

Use the law of conservation of mass to answer the questions.

Chemistry
1 answer:
irinina [24]3 years ago
5 0

Answer:

\boxed {\boxed {\sf 28 \ grams}}

Explanation:

The Law of Conservation of Mass states that mass cannot be created or destroyed.

In terms of a chemical reaction, the mass of the reactants has to equal the mass of the products.

The reactants are A and B. The mass of A is 19 grams and the mass of B is 24 grams. Add the masses.

  • 19 g + 24 g= 43 g

This is the mass of the reactants.

The products and C and D. The mass of C is 15 grams. The mass of the products has to equal the mass of the reactants, which is 43 grams. Subtract 15 from 43 to find D's mass.

  • 43 g - 15 g= 28 g

<u>28 grams</u> of D will be produced.

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Calculate the mass of sodium phosphate in aqueous solution to fully react with 37 g of chromium nitrate(III) an aqueous solution
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41 g

Explanation:

The equation of the reaction is;

Cr(NO3)3(aq)+Na3PO4(aq)=3NaNO3(s)+CrPO4(aq)

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1 mole of sodium phosphate reacts with 1 mole of chromium nitrate

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x= 1 × 0.25/1

x= 0.25 moles

Mass of sodium phosphate = 0.25 moles × 163.94 g/mol

Mass of sodium phosphate = 41 g

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otez555 [7]

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