Determine the number of moles of phosphine gas that is formed when hydrogen gas reacts with phosphorus (at STP) to form 15.3 g of phosphine (PH3). (molar masses: P = 30.97g/mol, H = 1.01g/mol)

Which statement can best be concluded from the ideal gas law?

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.