In preparation of ammonia (NH3), the reaction of 7.2 g of H2 with 75 g of N2 produced 36 g of ammonia. What is the percentage yield of this reaction? N2 + H2 - NH3 44% O 66% O 132% 88% O 97%

If 6 moles of Si and 6 moles of N2 are combined in a reaction flask, what remains in the reaction flask after the reaction is complete? Use this equation. 3Si + 2N2  → Si3N4

Consider the following equation: KOH(s) + CO₂(g) → K₂CO₃(s) + H₂O(l) Calculate the mass in grams of KOH that will be required to produce 145 grams of K₂CO₃

Determine the theoretical yield, in grams, of Fe2(CO3)3 produced from the complete reaction of 1.72 grams of Fe(NO3)3 with excess Na2CO3.

A flame test was carried out on solid sodium carbonate. The flame colour will be A Red B Lilac C Green D Yellow O

How many grams of diatomic nitrogen (N2) are needed to produce 2.75 moles of ammonia?

Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s). The equation for the reaction is   2KClO3⟶2KCl+3O2 Calculate how many grams of O2(g) can be produced from heating 12.2 g KClO3(s).

Based on the balanced reaction: 2 NO + 5 H2→ 2 NH3 + 2 H2O what is the theoretical yield (in grams) of NH3 that could be made by the reaction of (2.840x10^2) g of NO and (7.57x10^1) g of H2?

2. If 2.500 g of Na2CO3 is used in the reaction, calculate the theoretical yield of NaCl.

A 235.2-g sample of ground water is analyzed for calcium. The Ca2+ in the sample is first precipitated and filtered-off as NH4CaPO4·7H2O. This precipitate is dried and heated, releasing water and ammonia to yield anhydrous calcium pyrophosphate (Ca2P2O7). The mass of Ca2P2O7 obtained is 0.0234 g.Give the calcium content of the ground water in parts per million (to three significant figures).