When a 3.80 g sample of magnesium nitride (MW 101g/mol) is reacted with 3.30 g of water, 3.60 g of MgO is formed. What is the percent yield of this reaction?                   Mg3N2 + 3 H2O --> 2 NH3 + 3 MgO

Q4. Some airbags in cars contain sodium azide (NaN3). (a) Sodium azide is made by reacting dinitrogen monoxide gas with sodium amide (NANH2) as shown by the equation. 2NANH2 + N20 → NaN3 + NAOH NH3 Calculate the mass of sodium amide needed to obtain 550 g of sodium azide, assuming there is a 95.0% yield of sodium azide. Page 5 of 12 Give your answer to 3 significant figures. (b) If a car is involved in a serious collision, the sodium azide decomposes to form sodium and nitrogen as shown in the equation. 2NAN3(s) 2Na(s) + 3N2(g) The nitrogen produced then inflates the airbag to a volume of 7.50 x 10-2 m3 at a pressure of 150 kPa and temperature of 35 °C. Calculate the minimum mass of sodium azide that must decompose. (The gas constant R = 8.31 J K-1 mol-1) (Hint: find out the number of moles of Nzusing Ideal gas equation, and determine the number of moles and mass of NaN3 from the balanced equation)

For the chemical reaction, 2Al+3H2SO4--->3H2+Al2(SO4)3 what mass of sulfuric acid is needed to produce 4.67 mol of aluminum sulfate?

Determine the theoretical yield of Mg if 10.00 g of Rb and 9.00 g of MgCl, are reacted according to the following reaction. Rb(s) + MgCl2(s) - Mg(s) + RbCI(s) O 2.844 g Mg O 0.969 g Mg O 2.298 g Mg O 1.422 g Mg O 3.656 g Mg

Combining 0.319 mol Fe, O, with excess carbon produced 11.5 g Fe. Fe, 0, + 3C → 2 Fe + 3 CO > 3. What is the actual yield of iron in moles? actual yield: 0.205 What is the theoretical yield of iron in moles? theoretical yield: What is the percent yield? percent yield:| 31.34

Consider the reaction between HCl and O2:                     4HCl(aq) + O2(g) -> 2H2O(l)+2Cl2(g) When 15.4 g of HCl reacts with 18.2 g of O2, 14.3 g og Cl2 are collected  a) Determine the limiting reactant b) Deteremine the theoretical yield of Cl2 c) Determine the % yield of Cl2

2 Al (s)  +  3 Br2  ----------->  2AlBr3 (s)     How many grams of aluminum bromide are produced by the complete reaction of 0.557 grams of aluminum?

Consider the following reaction: 2 Al + 3 CuCl2.H2O → 3 Cu + 2 AlCl3 + 6 H2O Assuming 46.08 grams of Al are consumed in the presence of excess copper II chloride dihydrate, how many grams of AlCl3 can be produced if the reaction will

What is the maximum number of grams of NH3 that can be produced by the reaction of 1.0 g of N2 with 3.0 g of H2 according to the following equation?                   N2 + 3 H2 -->  2 NH3

Part A Give the percent yield when 28.16 g of CO, are formed from the reaction of 4.000 moles of C3H18 with 4.000 moles of O2. 2 C3H18 + 25 O2→ 16 CO2 + 18 H20