Convert 1.57 g to kg, cg, and mg. 

What is the term for a reaction that proceeds by requiring heat energy?   Example: N2(g) + O2(g) + 180.5 KJ → 2NO(g) 

A mixture of gases consists of N2, O2, H2 and F2.  The total pressure of the mixture is 511.56 kPa.  The pressure of the N2 is 584 mm Hg, the pressure of the O2 is 196 kPa and the pressure of the H2 is standard pressure.  What is the pressure of the F2 (in mm Hg)?  

A gas has a volume of 6,460 mL at 807 mm Hg and 77.2° What is the volume of the gas (in L) at STP? 

Calculate the pH of a solution with [H+] = 1.45 x 10-10 M.  b) Is the solution acidic, basic, or neutral? 

How many atoms of copper will react with 33.9 L of nitrogen at STP to produce copper(I)nitride?  6  Cu       +      1 N2       ->    2  Cu3N

At what pressure would 175 g of disulfur monoxide gas (S2O) occupy a volume of 16,600 mL at 195°C?

Draw the Lewis structure (structural formula) of CCl4. Then figure out the molecular geometry of CCl4 from the structure you draw.

What type of reaction is ___I2 + ___Ca  ->  ___CaI2?

Which is larger in size Ca+2 or Ca?