C8H18(g)+O2(g)→CO2(g)+H2O(g) How many moles of water are produced in this reaction? Express your answer with the appropriate units.

What mass in grams of the dihydrate H2C2O4 • 2 H2O (molar mass = 126.0 g/mol) is needed in order to deliver 23.5 grams of H2C2O4 (molar mass = 90.0) to the reaction vessel?

In one reaction, 41.2 g of Cu(NO3)2 is produced. What amount (in mol) of CuCl2 was consumed? What mass (in grams) of AgCl is produced? mol CuCl2 consumed g AgCl produced

Another component of acid rain is nitric acid, which forms when NO2, also a pollutant, reacts with oxygen and water according to the simplified equation 4NO2 (g) + O2(g) + 2H2O(1) → 4HNO3 (aq) The generation of the electricity used in a medium-sized home produces about 19 kg of NO2 per year. Part A Assuming that there is adequate O, and H2O, what mass of HNO3, in kg, can form from this amount of NO2 pollutant? Express the mass to two significant figures and include the appropriate units. HA ? m = 26.02 %3D

Hydrobromic acid dissolves solid iron according to the following reaction: Fe(s)+2HBr(aq)→FeBr2(aq)+H2(g) What mass of HBr (in g) would you need to dissolve a 2.8-g pure iron bar on a padlock?         Express your answer using two significant figures.   What mass of H2 would be produced by the complete reaction of the iron bar?         Express your answer using two significant figures.

There are two steps in the extraction of copper metal from chalcocite, a copper ore. In the first step, copper(I) sulfide and oxygen react to form copper(I) oxide and sulfur dioxide: 2 Cu₂ S(s) + 3 0₂(g) →2 Cu₂O(s) +2 SO₂ (g) In the second step, copper(I)oxide and carbon react to form copper and carbon monoxide: Cu₂O(s) + C(s)→2 Cu(s)+CO(g) Write the net chemical equation for the production of copper from copper(I) sulfide, oxygen and carbon. Be sure your equation is balanced. ローロ 06

The balanced equation for the combustion of butane, CaH1o, is shown below. For your convenience, the molar mass of each substance is shown below their formulas (in purple). Use this information to make the requested calculation: 2 CAH10(g) + 13 02(g) -> 8 CO2(g) + 10 H20(1) 58.124 32 44.011 18.016 What mass of butane, in kg, will be needed to react fully with 250 L of oxygen gas?

[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.

00 S Nazza .01608 ·018302 3. (part a). You are given 0.104 g of a sample of KwFex(C₂O4)y(H₂O)z. In the laboratory, you titrate this sample with 0.00940 M KMnO4 and you need 10.1 mL of the KMnO4 solution to reach the stoichiometric point. Calculate the mass and moles of [C₂04]²- in the sample. Please show all of your detailed calculations.

One method used in the production of H2 gas is to put the coal into an incomplete combustion reaction with air and water vapor in the combustion chamber (water gas production). A simplified reaction can be written as:2C + 1 H2O + a (O2+3.76N2) = 1C0 + 1CO2 + 1H2 + 3.76·a·N2 Here, 02+3.76N2 represents the amount of air and is multiplied by the coefficient "a".a) The value of the coefficient "a" for this reaction b) The amount of air to be used for 1 kg of pure carbon (C) (total amount of 02 and N2) (kg-air/kg-carbon) Hint: Consider how many kilograms 1 kmol "C" weighs.