Which of the following compounds is a base?

Identify HNO3

Identify the spectator ions in the following molecular equation. LiBr(aq) + AgNO3(aq) ->  AgBr(s) + LiNO3(aq)  

Which of the following reactions is a acid-base reaction?  

A mixture of 0.220 moles CO, 0.350 moles N2 and 0.640 moles Ne has a total pressure of 2.95 atm. What is the pressure of CO?

How many milliliters of 1.13 M HClO4 solution are needed to neutralize 500.0 mL of 0.0789 M NaOH? (Show work for full credit)

Which of the following compounds is base?

What chemical species is undergoing oxidation and what is undergoing reduction in the following reaction? Describe how you came to this conclusion. CH4(g) + 2 O2(g) -> CO2(g) + 2 H2O(g)  

What chemical species is undergoing oxidation and what is undergoing reduction in the following reaction? Describe how you came to this conclusion. Mg(s) + 2 HCl(aq) -> MgCl2(aq) + H2(g)  

Given the below  equation  determine the number of liters of CO2 formed at STP when 240.0 grams of C2H6 is burned in excess oxygen gas. (Show work for full credit) 2C2H6(g) + 7O2(g) -> 4CO2(g) + 6H2O(g)