In the world of chemistry, a 'mole' is a number of something... a very large number of something
Just as a 'dozen' is 12 of something, a 'mole' is about 6.02 . 1023 of something,
In chemistry, we like to measure the number of atoms or molecules in moles.
If one mole is equal to 6.02 * 1023 atoms, and you have 7.00.1023 atoms, then how
many moles do you have?
Round your answer to two decimal places.

1) in saturated limewater, [h+ ]=3.98x10-13 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 2) in butter, [h+ ]=6.0x10-7 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 3) in peaches, [oh]=3.16x10-11 m a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 4) during the course of the day, human saliva varies between being acidic and basic. if [oh]=3.16x10-8 m, a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? /

Based on the equation and the information in the table, what is the enthalpy of the reaction?

A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159