What is the mass (in grams) of 5.00 L of NH₃ at STP?

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?