Which of the following formulas contain the same number of oxygen atoms? Mg(NO2
NH. NO
Ca(CIOU
IV
Nacioz
V
CONO2
O A Formulas I and II
OB. Formulas II and IV
o C. Formulas I, II, and III
OD. Formulas I, II, and IV

What would be the original temperature of a gas that has a volume of 2.0 l and a pressure of 2.0 atm and an unknown temperature that the volume increased to 3.5 l in its pressure decreased to 1.0 atm if the final temperature is measured to be 11°c