1) convert cm to m
2) sig figs
When making a bigger number smaller, the exponent will be a positive number.
The answer will be 
× 
meters after rounding
Answer:
202,020 pennies
Explanation:
The amount of pennies in 1 dollar is 100.
Basically, you just multiply the whole dollar amount (2020) by 100 and then add 20 to find the amount of pennies.
(2020)(100)+20= 202,000+20= 202,020 pennies.
Answer:
B) 2.87 L
Explanation:
A mole of any gas at STP has a volume of about 22.412 liters. So, 0.128 moles of gas will have a volume of ...
0.128 · 22.412 L ≈ 2.87 L
Answer:
the first geological time period of the Paleozoic Era
Explanation:
Its going to be 2.81 x 1023 atoms
