I am find with just the answers, or an explanation either or works. 1. Calculate

ID: 835150 • Letter: I

Question

I am find with just the answers, or an explanation either or works.

1. Calculate the number of moles of P4S10 that can be produced from 1.25 mol of P4 and 1.25 mol of S8

4 P4(s) + 5 S8(s) --> 4 P4S10(s)

a. What would the potential yield of P4S10 be (in moles) if the amount of P4 were doubled (2.50 mol P4 and 1.25 mol S8)?

b. What would the potential yield of P4S10 be (in moles) if the amount of S8 were doubled (1.25 mol P4 and 2.50 mol S8)?

2. Calculate the number of moles of nitrogen dioxide, NO2, that could be prepared from 0.52 mol of nitrogen oxide and 1.1 mol of oxygen.

2 NO(g) + O2(g) ? 2 NO2(g)

a. Identify the limiting reagent and the excess reagent in the reaction.

3. Calculate the mass of hydrogen chloride that can be produced from 11.3 g of hydrogen and 11.3 g of chlorine according to the following reaction:

H2(g) + Cl2(g) --> 2 HCl(g)

4.Nitrogen reacts with red-hot magnesium to form magnesium nitride,

3 Mg(s) + N2(g) ? Mg3N2(s)

which reacts with water to form magnesium hydroxide and ammonia.

Mg3N2(s) + 6 H2O(l) ? 3 Mg(OH)2(aq) + 2 NH3(aq)

Calculate the number of grams of magnesium that would be needed to prepare 21.2 grams of ammonia.

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