Can a combustion reaction have CO2 and H2O as reactants?

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?