Magnesium sulphate is soluble in water. (a) Describe how crystals of magnesium sulphate are made using magnesium oxide powder and sulphuric acid as reactants.​

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

What is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 l tank and at a temperature of 301 k? (r=0.0821 l·atm/mol·k) 3.08 atm 1.2 atm 0.23 atm 4.01 atm 4.94 atm

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg