45.0 mL of a 0.149 M Na2CO3 solution completely react with a 0.150 M HNO3 solution according to the following balanced chemical equation: Na2CO3(aq) + 2 HNO3(aq) + 2 NaNO3(aq) + CO2(g) + H2O(1)
What mass (in grams) of carbon dioxide is formed?

indium, and thallium have three electrons i think

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.