Find the percent composition for oxygen in K3PO4

Round to the whole number.

What is the value of the standard enthalpy of formation of an element in its most stable form?

Identify the limiting reactant when 9.65-g h2so4 reacts with 6.10-g of naoh.the equation is h2s04 + 2naoh = 2h2o + na2so4• what is the theoretical yield of na2so4, in grams? • how much of the excess reagent will remain after the reaction has been completed? • if 10.5-g of na2so4 are actually recovered experimentally, what is the percent yield?

How far in advance is weather forecasting most accurate