How many grams of cah2 are needed

Assignment Help Chemistry
Reference no: EM13157739

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: EM13157739

Questions Cloud

Explain the ratio of lactate to lactic acid : How do you do the problem- The pKa for lactic acid, CH3CH(OH)COOH, is 3.86. At physiological pH (7.40), which is the predominant form
Freeplay/lifeline energy face in trying to sustain : What problems do you think Freeplay/Lifeline Energy face in trying to sustain the business?
Journal entries in general journal form : Flint Co. records purchase discounts lost and uses perpetual inventories. Prepare journal entries in general journal form for the following: (a) Purchased merchandise costing $900 with terms 2/10, n/30. (b) Payment was made thirty days after the p..
The vapor pressure of pure ethyl bromide at this temperature : The vapor pressure of pure ethyl bromide at this temperature is 400.0 torr. Assuming an ideal solution, what is the molecular mass of the compound?
How many grams of cah2 are needed : 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?
Predatory lending inc. sells financial services : Predatory Lending Inc. sells financial services (high interest micro loans) through independent agents. Good agents generate $2,000 in net revenue in the first year, a figure that grows at 5% annually. Poor agents, on the other hand, produce $1,000 i..
Audit plan for sales places extensive reliance on internal : audit plan for sales places extensive reliance on internal controls and use of substantive analytical procedures. You're testing for internal control for sales has found a significant number of instances where clients' credit ratings have not been ch..
What is the final concentration of a water solution made : What is the final concentration of a solution made from 7.1 mL of 0.8 M CuSO4 and 14.3 mL of water?
What is the final volume of gas sample : what is the final volume of a 400.0 ml gas sample that is subjected to a temperature change from 22.0 degrees C to 30.0 degrees C and a pressure change from 760 mm Hg to 360 mm Hg

Reviews

Write a Review

Chemistry Questions & Answers

  Determine how hot should be the air in a ballon

Determine How hot should be the air in a ballon be heated if  it has initially a volume of 750. L at  the temperature of 20 degree celsius and the final volume must be 1,000.l

  Calculate the freezing point of a solution

Calculate the freezing point of a solution containing 5.0 grams of KCl and 550.0 grams of water. The molal-freezing-point-depression constant for water is .86 °C/m.

  What time is needed for the concentration

The half-life for the second order reaction of a substance A is 55 seconds when [A]o is 0.84 M. What time is needed for the concentration to decrease to 1/4 of the original value.

  .calculate the mass of 0.1550l of benzene

the density of benzene at 15 degrees C is 0.8787g/ml.calculate the mass of 0.1550L of benzene at this temp.

  What is the empirical formula of the unknown compound

An unknown compound contains carbon, hydrogen, oxygen, and sulfur atoms. When a 10.00 mg sample of the unknown compound was combusted, it produced 16.27 mg of CO2, 5.55 mg of water, and 7.90 mg of SO2.

  How could you use ir spectroscopy to identify vial

how could you use IR spectroscopy to identify which alkene is in which vial? How do you determine what the wavenumber values are for specific compounds/ elements?

  Determine the final temperature of the water

If a 100.0 g sample of water at 60.0 degreesC is added to a 100.0 g sample of water at 10.0 degrees C, determine the final temperature of the water.

  Describe how to separate mixture of oil, sand and saltwater

If a gas occupies 625 mL at 0 Celsius and 760 torr pressure, what will its volume be at 373 degree C and 1520 torr pressure? How would you describe how to separate a mixture of oil, sand, and saltwater.

  How many kj of heat are required

How many kJ of heat are required to produce 13.7g NO2, by 2NO2+ O2 --> 2NO2. the heat of reaction is 113.04

  What is the percent yield

a student produces 2.73 g of a compound. She calculates the theoretical yield as 3.40 g. What is the percent yield

  What is the final temperature

The specific heat of Ti is .523 J/gcelcius. What is the final temperature of 62g of Ti intially at 41celcius after 8.5kj of heat is added?

  Calculate the minimum pressure that must be applied

A water desalination plant is set up near a salt marsh containing water that is 0.10 M NaCl. Calculate the minimum pressure that must be applied at 17°C to purify the water by reverse osmosis.

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