Combined Gas Law A 7.5L container at a pressure of 200.0kpa and a temp of 45.00C is compressed to 5.0L and cooled to -30.0OC. What is the new pressure?

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?

Nan element’s square on the periodic table, the number with the greatest numerical value represents the