Please help me with this... I think the answer is C. but I'm not sure.
A closed container has 5.04 • 10^23 atoms of a gas. Each atom of the gas weighs 1.67 • 10^-24 grams. Which of the following shows and explains the approximate total mass, in grams, of all the atoms of the gas in the container? (1 point)
8.42 grams, because (5.04 • 1.67) • (10^23 • 10^-24) = 8.4168
6.71 grams, because (5.04 + 1.67) • (10^23 • 10^-24) = 6.71
0.67 grams, because (5.04 + 1.67) • (10^23 • 10^-24) = 6.71 • 10^-1
0.84 grams, because (5.04 • 1.67) • (10^23 • 10^-24) = 8.4168 • 10^-1
Thank you
Another question:
Which number is NOT in scientific notation? (1 point)
7 • 1024
0.8 • 103
1.09 • 10–2
1.8 • 10–5