Question

how many moles AL(OH)3 are required to completelyreactwith 2.75 molesof H2SO4?

Answer 1

Use the coefficients in the balanced equation to convert moles Al(OH)3 to moles H2SO4.

Al(OH)3 + H2SO4 ==> Al2(SO4)3 + H2O
You will need to balance the equation.