2. Sodium nitrate decomposes into sodium nitrite and oxygen gas with heat. When 0.123 g of sodium nitrate was heated, it produced 16.2 mL of oxygen collected over water. The room temperature and pressure are 22.5°C and 758 torr, respectively. The water over which the gas was collected had a temperature of 20.0°C. Calculate the theoretical amount of oxygen in grams which should have been produced. What is the percent yield? Theoretical yield oxygen: Actual yield oxygen: bg Percent yield:

For the following chemical reaction,                                             N2 (g) + 3 H2 (g) → 2 NH3 (g)  If 15 molecules of nitrogen gas and 12 molecules of hydrogen gas react together what will be left in the container at the end of the reaction.

Consider the following unbalanced chemical reaction:  Br2 + F2 → BrF5 How many grams of fluorine gas (F2) would be required to completely react with 100.0 grams of bromine (Br2)?

Let us explore a reaction with a limiting reactant. Here, zinc metal is added to a flask containing aqueous HCl, and H2 gas is a product.   The three flasks each contain 0.300 mol of HCl. Zinc is added to each flask in the following quantities: 4.90 g, 9.81 g, 19.6 g.  When the reactants are combined, the  inflates the balloon attached to the flask. The results are as follows: Flask 1: Balloon inflates completely, but some  remains when inflation ceases. Flask 2: Balloon inflates completely. No Zn remains. Flask 3: Balloon does not inflate completely. No Zn remains.   What mass of Zn was added to each flask? Mass = ? g (flask 1) Mass = ? g (flask 2) Mass = ? g (flask 3)

<7 of 11 Metal Ca Fe Cu Mg A B с assroom.collegeboard.org D Observations All the calcium reacted in less than 30 seconds. There was a vigorous production of a gas. ©*** Most of the iron reacted very slowly. There was a slow production of a gas. Some of the iron never totally reacted. No visible reaction. A student puts samples of four different metals of equal mass into HCl(aq) and records observations in the table. Which of the following ranks the metals from least reactive to most reactive? Ca Fe Cu < Mg of the magnesium reacted in about three minutes. There was a moderate production of a gas. Ca < Mg < Fe < Cu 43% 10:50 Cu Fe < Mg < Ca :D Cu Ca Mg < Fe Submit : ||| f(x) H 8

[Tutorial: Limiting reactant stoichiometry] This question will walk you through the steps of calculating the mass of products produced based on your determination of the limiting reactant.   b) Step 2a: Use dimensional analysis to determine the theoretical yield of the product. Calculate the theoretical yield in grams Al₂O₃ from the complete reaction of 64.7 grams Al according to the following balanced chemical equation: 2 Al(s) + Fe₂O₃(s) → Al₂O₃(s) + 2 Fe(s) c) Calculate the theoretical yield in grams Al₂O₃ from the complete reaction of 201 grams Fe₂O₃ according to the following balanced chemical equation: 2 Al(s) + Fe₂O₃(s) → Al₂O₃(s) + 2 Fe(s) d) Which of the following substances is the limiting reactant? e) What is the mass in grams of the excess Fe₂O₃ remaining after the partial reaction of 201 g Fe₂O₃ with 64.7 g Al? Give your answer to three significant figures.

Is H₂O₂ being created or destroyed by the chemical reaction? If H₂O2 is being created or destroyed, what is the rate at which it is being created or destroyed 1000 seconds after the reaction starts? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. If H₂O₂ is being created or destroyed, what is the average rate at which it is being created or destroyed during the first 1000 seconds of the reaction? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. ооо created destroyed neither created nor destroyed 0 x10 00 X Ś 0

When aqueous solutions of magnesium chloride (MgCl2) and silver nitrate (AgNO3) are mixed, the products are solid silver chloride and aqueous magnesium nitrate. Write the balanced chemical equation for this reaction. (Include states-of-matter under the given conditions in your answer. Use the lowest possible whole number coefficients.)

The actual yield of one of the reactions in 43.5g. What was theoretical yield in the laboratory if the scientist concluded that % yield of the reaction ended up to be 77%.

Consider the following balanced equation: 2 H2 + O2 → 2 H2OWhat mass of water (H2O) will be collected if 60.0 grams of oxygen gas (O2) are consumed? (Mass of H2O = 18.02 g/mol and Mass of O2 = 32.00 g/mol)