Part A Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: Cab(s) + H₂O() Ca(OH)2(s) A 4.60 g sample of CaO is reacted with 4.44 g of H₂O. How many grams of water remain after the reaction is complete? O1.48 g 0.247 g 2.96 g O 0.165 g O 0.00913 g Submit Provide Feedback 1 Request Answer

Part A Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: Cab(s) + H₂O() Ca(OH)2(s) A 4.60 g sample of CaO is reacted with 4.44 g of H₂O. How many grams of water remain after the reaction is complete? O1.48 g 0.247 g 2.96 g O 0.165 g O 0.00913 g Submit Provide Feedback 1 Request Answer

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 41E: One of the components of polluted air is NO. It is formed in the high-temperature environment of...

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One of the components of polluted air is NO. It is formed in the high-temperature environment of internal combustion engines by the following reaction: N2(g)+O2(g)2NO(g)H=180KJ Why are high temperatures needed to convert N2 and O2 to NO?
Carbon dioxide from the atmosphere “weathers”, or dissolves, limestone, CaCO3 by thereaction.CaCO3 (s) + CO2 (g) + H2O (l) → Ca2+ (aq) + 2 HCO3- (aq)What is DH° for this reaction? DH°f CaCO3 (s) = -1206.9 kJ/mol, DH°f CO2 (g) = -393.5 kJ/mol,DH°f H2O (l) = -285.8 kJ/mol, DH°f Ca2+ (aq) = -542.8 kJ/mol, DH°f HCO3 (aq) = -692.0 kJ/mol
A BaSO4 slurry is ingested before the gastrointestinal tract is x-rayed because it is opaque to x-rays and defines the contours of the tract. Ba2+ ion is toxic, but the compound is nearly insoluble. If ΔG° at 37°C (body temperature) is 59.1 kJ/mol for the process BaSO4(s) ⇌ Ba2+(aq) + SO42−(aq) what is the [Ba2+] in the intestinal tract? (Assume that the only source of SO42− is the ingested slurry.)
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Using your cars miles per gallon and the miles you drive in 1 week calculate the liters of carbon dioxide you produce when using your car. Compare your miles in February (pre-covid) versus June (post-covid). Assume that your engine combusts at 1.00 atm and 25.0 celsius. Assume that your gasoline is 100% octane (C8H18). You will also need to balance the combustion reaction that occurs in your car engine. You will need to use PV=nRT I think calculations are not correct specially for June. please help 2C8H18+ 25O2→16CO2+18H2O   Feb, (pre covid), Miles covered per week=15×7=105 miles So fuel consumed per week=105 miles/30 miles ga =3.5 ga Density of octane=3.18 kg/ga Mass=volume × density Mass of Octane used per week = 3.5 ga x 3.18 kg/ga =11.13 kg Moles of octane in 11.13 kg 11.13 kg/114 kg/k mol =0.097 kmol 2 kmol octan≡16 kmol CO2 0.097 kmol octane =16/2 × 0.097 kmol CO2 0.097 kmol octane = 0.781 kmol CO2 n= 0.781 kmol=781 moles CO2 V=781 mol x 8.314j/k. mol x (25+273)K/1atm x…
At 25 °C, Kc =  1.4 x 10-35   for the reaction2N2(g) + O2(g) ⇆ 2N2O(g)What is the value of Kc for the reaction:N2O(g) ⇆ N2(g) +1/2O2(g)(Express your answer in scientific notation.)
Consider the complete combustion of glucose (C6H12O6) with O2 and calculate the moles of CO2produced when 1.02 g of glucose is reacted with 25 mL of O2 at body temperature (37 ºC) and 0.970 atm. C6H12O6 + 6 O2 (g) → 6 CO2 (g) + 6 H2O a. 0.95 b. 0.0022 c. 9.53 x 10-4 d. 6.33 x 10-2 e. 5.67 x 10-3
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Please answer all questions below. Show work please. Copper cycle involves five reactions.In the first reaction, copper metal is oxidized by nitric acid to form copper (II) nitrate, Cu(NO3)2. It is then converted to copper (II) hydroxide, Cu(OH)2, by reaction with base. When this compound is heated, it is transformed to copper (II) oxide, CuO. Copper (II) oxide is then reacted with acid to form copper (II) sulfate, CuSO4. Finally, the copper ions in the copper sulfate are reduced to copper metal by magnesium. 1. Which reaction numbers involve copper changing its charge (oxidation state) in going from reactant to product? a. Write the reaction numbers with the charge change of copper for these reactions. b. What type of reactions are these called? 2. Which reaction number above involves only one reactant forming more than one product and what type of reaction is it classified as? 3. Which reaction numbers involve two reactants exchanging cation/anion pairings?
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