PLZ HELP Frozen ice caps in the Arctic Ocean are made out of
A water vapor
B salt water
C fresh water
D a mixture of salt and fresh water

What’s the scientific notation for the number 6,840,000,000

The following questions a24 - a26 relate to 100 ml of 0.0150 m solution of benzoic acid (c6h3cooh). ka(c6h3cooh) = 6.4 x 10^-5. what is the ph of the solution after the addition of 1 x 10^-3 moles of naoh? you may assume no volume change to the solution upon addition of the naoh.

Can someone me with these problems? see the attachment, .