[" How many moles of "Al_(2)(SO_(4))_(3)" would be in "50g" of the substance? "],[" 0"083" mole "]

How many moles of H_(2)SO_(4) are present in 4.9g H_(2)SO_(4) ?

How many moles of H2SO4 are present in 4.9g of H2SO4?

How many gram of Al_(2)(SO_(4))_(3) are present in 100mL of 0.15 m solution of Al_(2)(SO_(4))_(3) ? The density of solution is 1.4g//mL .