Liquid octane (CH₂(CH₂) CH3) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). If 25.6 g of carbon dioxide is produced from the reaction of 12.6 g of octane and 70.4 g of oxygen gas, calculate the percent yield of carbon dioxide. Be sure your answer has the correct number of significant digits in it. [% X S

Liquid octane (CH₂(CH₂) CH3) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). If 25.6 g of carbon dioxide is produced from the reaction of 12.6 g of octane and 70.4 g of oxygen gas, calculate the percent yield of carbon dioxide. Be sure your answer has the correct number of significant digits in it. [% X S

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter4: Stoichiometry

Section: Chapter Questions

Problem 4.69PAE: 4.69 The pictures below show a molecular-scale view of a chemical reaction between H2 and CO to...

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3.115 The average person exhales 1.0 kg of carbon dioxide in a day. Describe how you would estimate the number of CO2 molecules exhaled per breath for this average person.
Copper reacts with nitric acid according to the following reaction. 3Cu(s)+8HNO3(aq)3Cu(NO3)2(aq)+2NO(g)+4H2O(l) If 2.40 g of Cu is added to a container with 2.00 mL of concentrated nitric acid (70% by mass HNO3; density = 1.42 g/cm3), what mass of nitrogen monoxide gas will be produced?
4.69 The pictures below show a molecular-scale view of a chemical reaction between H2 and CO to produce methanol, CH3OH. The box on the left represents the reactants at the instant of mixing, and the box on the right shows what is left once the reaction has gone to completion. Was there a limiting reactant in this reaction? If so, what was it? Write a balanced chemical equation for this reaction. As usual, your equation should use the smallest possible whole number coefficients for all substances.
4.36 Sometimes students in chemistry labs determine percentage yields greater than 100%. Assuming there is no calculation error, how could this happen?
Propane, C3H8, is the fuel of choice in a gas barbecue. When burning, the balanced equation is C3H8+5O23CO2+4H2O a What is the limiting reactant in cooking with a gas grill? b If the grill will not light and you know that you have an ample flow of propane to the burner, what is the limiting reactant? c When using a gas grill you can sometimes turn the gas up to the point at which the flame becomes yellow and smokey. In terms of the chemical reaction, what is happening?
3.82 The particulate scale drawing shown depicts the products of a reaction between N2 and O2 molecules. (a) Draw a similar representation for the reactants that must have been present before the reaction took place. (b) Write a balanced chemical equation for the reaction, using the smallest possible whole number coefficients.
When washing soda, Na2CO3, reacts with sulfuric acid, H2SO4, the equation is Na2CO3(aq) + H2SO4(aq) CO2(g) + H2O() + Na2SO4(aq) (a) Describe in words the meaning of this chemical equation. (b) Verify that the equation conforms to the law of conservation of matter.
Aqueous hydrobromic acid HBr will react with solid sodium hydroxide NaOH to produce aqueous sodium bromide NaBr and liquid water H2O.Suppose 61. g of hydrobromic acid is mixed with 44.1 g of sodium hydroxide. Calculate the minimum mass of hydrobromic acid that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits. I keep getting this problem wrong because of the sig. digits, dont round till the end because if it is off by 0.1, it will be incorrect.
Aqueous sulfuric acid (H, SO,) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium sulfate (Na, So,) and liquid water (H,0). If 3.45 g 2 of sodium sulfate is produced from the reaction of 7.8 g of sulfuric acid and 2.9 g of sodium hydroxide, calculate the percent yield of sodium sulfate. Be sure your answer has the correct number of significant digits in it. O%
Aqueous hydrobromic acid (HBr) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium bromide (NaBr) and liquid water (H,O). If 1.68 g of sodium bromide is produced from the reaction of 4.0 g of hydrobromic acid and 3.3 g of sodium hydroxide, calculate the percent yield of sodium bromide. Be sure your answer has the correct number of significant digits in it.
Aqueous sulfuric acid (H,SO4) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium sulfate (Na, SO,) and liquid water (H,0). If 1.70 g of water is produced from the reaction of 7.8 g of sulfuric acid and 4.4 g of sodium hydroxide, calculate the percent yield of water. Be sure your answer has the correct number of significant digits in it.
Aqueous hydrobromic acid (HBr) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium bromide (NaBr) and liquid water (H,O). 0.731 g of water is produced from the reaction of 7.3 g of hydrobromic acid and 4.7 g of sodium hydroxide, calculate the percent yield of water. Be sure your answer has the correct number of significant digits in it.

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