How many grams of cah2 are needed

Assignment Help Chemistry
Reference no: EM13132383

CaH2(s) + 2H2O(l) Ca(OH)2(aq) + 2H2(g) How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 10.0 L of H2 gas if the pressure of H2 is 769 torr at 28.0°C?

Reference no: EM13132383

Questions Cloud

Total undiscounted cash flow in the final year : What is the total undiscounted cash flow in the final year of an investment, assuming: $10,000 after-tax cash flows from operations, the fully depreciated machine is sold for $1,000, the project had required $2,000 in additional working capital, a..
What is the mol fraction na2so4 in a solution : What is the mol fraction Na2SO4 in a solution which is 11.5% by weight Na2SO4 (molar mass Na2SO4 = 142.06 g/mol and H2O = 18.016 g/mol)?
What is omega after-tax wacc : It has also issued long-term bonds at an interest rate of 7 percent. It pays tax at a marginal rate of 35 percent.a. What is Omega's after-tax WACC?
What would you expect to observe when adding one drop : What would you expect to observe when adding one drop of iodine-potassium iodine reagent to each of the four carbohydrates?
How many grams of cah2 are needed : CaH2(s) + 2H2O(l) Ca(OH)2(aq) + 2H2(g) How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 10.0 L of H2 gas if the pressure of H2 is 769 torr at 28.0°C?
Describe how mass effects act to lower the carbonyl : Explain how mass effects act to lower the carbonyl frequency, as well as how inductive and hyperconjugation effects act to raise the carbonyl frequency of aldehydes relative to ketones.
Approximate real rate of interest : If treasury bills are currently paying 7 percent and the inflation rate is 3.8 percent, what is the approximate real rate of interest? The exact real rate?
How much energy in joules is required : How much energy in joules is required to heat 295 mL of coffee from 25.0  0C to 62.0  0C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 rm J/(gc. K) .
Freddie preparer penalty : Freddie purposely omitted $100,000 of cash receipts that should have been reported as gross income. Freddie charged Peggy $6,000 to prepare the return. What is Freddie's preparer penalty?

Reviews

Write a Review

Chemistry Questions & Answers

  How many kilowatt-hours of energy are required

A room contains 46 of air.How many kilowatt-hours of energy are necessary to heat the air in the house from 9 to 30? The heat capacity of air is 1.03.

  What is the molar heat of vaporiza-tion of c6h6

What is the molar heat of vaporiza-tion of C6H6 if the vapor pressure of C6H6 is 120 torr at 27 degree celsius, and its normal boiling point is 80.1 degree celcius.

  Calculate the amount of zinc metal

A sample of zinc metal reacts completely with an excess of hydrochloric acid: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) The gaseous product is collected over water at 25.0oC and barometric pressure of 0.980 atm.

  What is the average speed of the sprinter

What is the average speed of the sprinter if A sprinter set a high school record in track and field, running 200. M in 22.0s .express your answer in kilometers per hour?

  How many coulombs of charge must have been transferred

In the reaction MnO4- + 8H+ + 5e- ⇔ Mn2+ + 4H20, the manganese in 3.95 grams of KMnO4 is reduced to Mn2+. How many coulombs of charge must have been transferred to the permanganate ion.

  What is the concentration of the unknown sulfuric acid soln

A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.

  Determine the limiting and excess reactant

Silicon Carbide is a hard substance used as an abrasive. it is prepared by heating SiO2 and carbon at high temperatures SiO2 + 3C = SiC + 2 CO determine the limiting and excess reactant.

  How do you find the specific heat of platinum

how do you find the specific heat of platinum if 23.6 grams is heated from 10.0c to 20.0c using 30.68 J of heat.

  What is the concentration of a ions at equilibrium

What is the concentration of A^3- ions at equilibrium for a 0.10 M solution of a hypothetical triprotic acid H3A, with Ka1 = 6.0 x 10^-3, Ka2 = 2.0 x 10^-8, Ka3 = 1.0 x 10^-14 ?

  What is the maximum volume of gaseous carbon dioxde produced

If 6.46 L of gaseous ethanol reacts with 16.1 L O2, what is the maximum volume of gaseous carbon dioxde produced

  Determine g for reaction

Determine ΔG for this reaction When A is full into a cylinder at  a pressure of 9.89 atm and the system is permitted to come to equilibrium, the final pressure was 15.94 atm.? Express your answer in units of kJ/mol

  Find the molarity of 0.5 grams of sodium chloride

find the molarity of 0.5 grams of sodium chloride is dissolved to make 0.05 ml of solution

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd