the anwsers first wto anwsers i was given were not in grams and were incorrect. i need the anwser in grams. the question states "Calculate the mass (in grams) of wach sample."

6.51025O3 molecules Express your answer to two significant figures and include the appropriate units. Incorrect; Try Again; 2 attempts remaining Part B 4.441019CCl2F2 molecules Express your answer to three significant figures and include the appropriate units