Calculate the number of moles (n) in each of the following: Part A 85.9 g of Ni Express your answer using three significant figures. nNi= Submit Part B V ΑΣΦ nk = Request Answer 159 g of K Express your answer using three significant figures. IVE ΑΣΦ ? mol mol

6 CO2 (g) + 6 H20 (- CH1206 (s) + 6 O2 (g) How many grams of carbon dioxide would be required to produce 42.5 g C,H1206? In the 'Answer' box, express your numerical answer to the nearest ±0.1

O 00 5 Phosphorus reacts with oxygen to form diphosphorus pentoxide, P,O,. 4 P(s) + 50,(g) –→ 2 P,0,(s) How many grams of P,O, are formed when 6.71 g of phosphorus reacts with excess oxygen? Show the unit analysis used for the calculation by placing the correct components into the unit-factor slots. 6.71 g P x = g P,O, Answer Bank 32.00 g 0, 4 mol P I mol P 30.97 g P 2 mol P,O, I mol P,0, I mol O, 141.94 g P,0, 5 mol 0, grams of P,0,: g P,0,

2. Early rockets used a fuel composed of hydrazine (N2H4) and dinitrogen tetraoxide (N204), which react on contact to form nitrogen gas and water vapor. How many grams of nitrogen gas form when 1.00 x102 g of N2H4 and 2.00 x102 g of N204 are mixed?

Part A A mixture of N2(g) and H2(g) reacts in a closed container to form ammonia, NH3(g). The reaction ceases before either reactant has been totally consumed. At this stage 3.4 mol N2, 3.4 mol H2, and 3.4 mol NH3 are present. How many moles of N2 and H2 were present originally? Express your answer using two significant figures. Enter your answers numerically separated by a comma nN₂,nH₂ = Ο ΑΣΦ Submit Request Answer Provide Feedback MacBook Pro ? mol

Butyric acid, C4H8O2, is a compound found in many fats and oils.  A 129.6 g sample of butyric acid is how many moles of butyric acid? Report the answer to 3 significant figures.

Answer the following questions regarding this chemical reaction: Cu(s) + HNO3(aq) --> Cu(NO3)2(aq) + H2O(l) + NO2(g) a. If you have 32.5 g of Cu, how much Cu(NO3)2 is produced? Use the correct number of significant figures.

Could you please answer these questions for me? They are all multiple parts of one long FRQ.

A high-performance heater that burns propane, C3H8(g), is adjusted so that 100.0 g of O2(g) enters the system for every 100.0 g of propane. Calculate the mol ratio of oxygen to propane. Write the answer as a decimal containing number.      O2 : C3H8   Is this mixture rich or lean?

Liquid hexane CH3CH24CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O . If 38.8g of water is produced from the reaction of 48.26g of hexane and 260.5g of oxygen gas, calculate the percent yield of water. Round your answer to 3 significant figures.