Calculate the correct volumes of gas from the indicated pressures to standard pressure (Standard Pressure = 101.3 kPa: show work). Assume temperature
stayed the same. 3pts each

a. 817 cm3 at 80.8 kPa

Calculate the number of molecules present in 0.750 mol of mgo.

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?

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.