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

Why does his teacher ask him to balance the equation by including the correct coefficient

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Plzz a sample of table sugar (sucrose, c12h22o11) has a mass of 7.801 g. ● a) calculate the number of moles of c12h22o11 in the sample b) calculate the number of moles of each element in c12h22o11 (number of moles of c, number of moles of h & number of moles of o) in the sample. (use your answer from part a as your starting point.) show your work and highlight your final answer. calculate the number of atoms of each element in c12h22o11 (number of atoms of c, number of atoms of h & number of atoms of o) in the sample. (use your answers from part b as your starting for each element.) show your work and highlight your final answer.