How many meters are in 250 centimeters

Name the most appropriate metric unit for each measurement

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?