Suppose the reaction Ca3(PO 4 )2 +3H2SO4 3CaSO4 +2H3PO4 is carried out starting with 143 g of Ca 3 (PO 4 ) 2 and 79.0 g of H2SO4 . How much phosphoric acid will be produced?

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .

Which is an example of a reversible physical change?