Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s)How many moles of lithium are needed to produce 0.45 mol of Li3N when the reaction is carried out in the presence of excess nitrogen?

If 588 grams of FeS2 is allowed to react with 352 grams of O2 according to the following unbalanced equation, how many grams of Fe2O3 are produced? FeS2 + O2 → Fe2O3 + SO2

The balanced reaction between aqueous nitric acid and aqueous strontium hydroxide is ________.

Solid aluminum and gaseous oxygen react in a combination reaction to produce aluminum oxide: 4Al (s) + 3O2 (g) → 2Al2O3 (s)In a particular experiment, the reaction of 2.5 g of Al with 2.5 g of O2 produced 3.5 g of Al2O3. The % yield of the reaction is ________.

Given the following reactionsN2 (g) + 2O2 (g) → 2NO2 (g)ΔH = 66.4 kJ 2NO (g) + O2 (g) → 2NO2 (g) ΔH = -114.2 kJthe enthalpy of the reaction of the nitrogen to produce nitric oxide N2 (g) + O2 (g) → 2NO (g)is ________ kJ.

How many grams of sodium chloride are there in 55.0 mL of a 1.90 M aqueous solution of sodium chloride?

How many moles of CaCl2 are formed in the neutralization of 138 mL of 0.352 M Ca(OH)2 with aqueous HCl?

Balance the equation below.  List the coefficients (separate by commas) C7H16 + O2 → CO2 + H2O

Reflect on your learning experience so far. Then, in a paragraph, discuss 1) what you find most challenging in this class,  2) what you need to do to get more out of this class, 3) how can we help you.

In a brief paragraph, describes what are the most common types of malpractice that lead to research misconduct, and explain what are the two ethical pillars proposed by the American Physical Society.