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A sample of gas has a volume of 215 mL at 23.5 °C and 84.6atm.  What volume will the gas occupy at STP? Answer should have proper significant figures and unit. All work must be shown to receive credit.  Upload your answer here

  Which of these is a covalent compound?

What is the pH of a 7.8 x 10-2 M KOH solution?   Answer should have proper significant figures and unit. All work must be shown to receive credit. Type your final answer here to receive credit. Upload your answer here

Sulfuric Acid, H2SO4, and Sodium metal react to form gaseous hydrogen and Sodium Sulfate, Na2SO4.  Upload your answer herea. Write the balanced chemical equation b. Write the complete ionic equationc. Write the net ionic equation d. Write the complete half-redox reactions, including electrons 

Identify the acid, base, conjugate acid and conjugate base in the following: HCl     +          H2O       →     H3O+       +     Cl-

As the temperature decreases, the solubility of all gases in water ___________________.  Write answer in all lower case

Which of the following would be expected as the temperature of a liquid is increased. 

Within an energy level, the ___ orbital is the highest in energy  

Water has the formula H2O.  Water can be made from the reaction of hydrogen and oxygen.  If [x] g of hydrogen react fully with [y] g of oxygen, then ____ of water is made.  Write final answer with two places after decimal. example: 100.00 

In a solution of sugar and water, ____________ is the solvent and ____________ is the solute. Use a comma to separate the answers with no spaces and all lower case. example:  atom,molecule