Answered

Which of the following has the greatest mass?
A. 1 mole of H2
B. 2 moles of K
C. 3 moles of Mg
D. 4 moles of He

Sagot :

Santiel102viz
A. 1mole of H2 = 2g
B. 2moles of K = 78g
C. 3moles of Mg = 72.9g
D. 4moles He = 16g

Ans : B. 2 moles of K