Consider the following unbalanced reaction. P4(s) + F2(g) PF3(g)

How many grams of F2 are needed to produce 199 g of PF3 if the reaction has a 73.4% yield?
I got 78.04888 and it says it wrong even tho i did sigfig and all

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

Imagine that you are buying books one by one and then piling them up after reading them. which geologic concept could you use to identify the topmost book as the newest?

Write the formula for the conjugate base acid of hexanoic acid