What elements valence electrons are 5s^2 5p^4
a. te
b. mo
c. pm
d. re

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius

How many atoms or molecules are there in a mole of a substance?

Calculate the mass of 0.750 mol of the following substance. na3po4.