Chemistry, 23.08.2019 01:30 carsonbake

Copper(ii) sulfide, cus, is used in the development of aniline black dye in textile printing. what is the maximum mass of cus which can be formed when 38.0 ml of 0.500 m cucl2 are mixed with 42.0 ml of 0.600 m (nh4)2s

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Answer from: billyeyelash

Explanation:

The chemical reaction equation will be as follows.

$CuCl_{2} + (NH_{4})_{2}S \rightarrow 2NH_{4}Cl + CuS$

As 1 mole $CuCl_{2}$ reacts with 1 mole of $(NH_{4})_{2}S$

Hence, moles of $CuCl_{2}$ = Molarity × Volume (in mL)

= 0.5 × 38.0 mL

= 0.019 mol

Moles of $(NH_{4})_{2}S$ = Molarity × Volume (in mL)

= 0.6 × 42.0 mL

= 0.0252 mol

As moles of CuS is less than the moles of $(NH_{4})_{2}S$ . This means that CuS is the limiting reagent.

Thus, maximum moles of CuS formed are 0.019 mol. As molar mass of CuS is 95.6 g/mol.

Therefore, maximum mass of CuS can be formed is $95.6 g/mol \times 0.019 mol$

= 1.8164 g

Thus, we can conclude that maximum mass of CuS formed is 1.8164 g.

Answer from: Quest

1.consider the following balanced equation and answer parts a through. show calculations for each part.

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.

explanation:

Answer from: Quest

catya that's not even a b or c

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Copper(ii) sulfide, cus, is used in the development of aniline black dye in textile printing. what i...