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Hydrogen gas is collected over water at total pressure of 95.0 kPa. The volume of gas collected is 28.0ml at 25 degrees Celsius. Determine the partial pressure of the hydrogen gas, if the water vapor pressure is 3.17 kPa

In what phase is the substance at 50°C and 1 atm pressure?

When calculating the mass of Cu2Se formed when 40.0g copper metal reacts with 28.0g selenium. What is the amount of excess reactant that is left over.


When done calculating the mass of Cu2Se formed when 40.0g copper metal reacts with 28.0g selenium. What is the limiting reactant?


the mass of Cu2Se formed when 40.0g copper metal reacts with 28.0g selenium



General chemistry

what classification of alcohol would 2-methyl-3-pentanol be?



Using the balanced equation above, how many moles ofAl2(SO4)3 would be produced if you began the reaction with 5.8 mol of Al(OH)3?


Using the balanced equation above, how many moles of CO2 would be produced alongside 30.5 mol of H2O?


Consider the following reaction:


5Fe2+ + 2MnO4-  + 8H+ → Mn2+ + Fe3++ 4H2O 


  1. Which substance is oxidized? 
  2. Which substance is reduced?
  3. Which substance is the oxidizing agent?
  4. Which substance is the reducing agent?




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