Q: If you have a concentration of $$5.71$$ ppb, what is this value in $$rac{kg}{b5L}$$?

$$5.71 imes 10$$^{-12}$$ rac{kg}{b5L}$$

Question 1

Which metric prefix corresponds to $$10^6$$?

Accepted Answer

mega

Question 2

A solution has a concentration of 2.50 parts per thousand (ppt). Express this concentration in $$rac{pg}{dL}$$, assuming the density of the solution is $$1.00 rac{g}{mL}.$$

Accepted Answer

$$2.50 	imes 10^6$ rac{pg}{dL}$$

Question 3

Which of the following is the correct scientific notation for the prefix 'nano'?

Accepted Answer

$$10^{-9}$$

Question 4

If you have a concentration of $$5.71$$ ppb, what is this value in $$rac{kg}{ b5L}$$?

Accepted Answer

$$5.71 	imes 10$$^{-12}$$ rac{kg}{ b5L}$$

Question 5

Which metric prefix would you use to express a mass of $$10^{-3}$$ grams?

Accepted Answer

milli

Question 6

A laboratory sample contains $$1.0 	imes 10$$^{-6}$$ moles of a substance. Which metric prefix best describes this quantity?

Accepted Answer

micro

Question 7

Convert $$2.5 mg to $$grams using metric prefixes.

Accepted Answer

$$2.5 	imes 10$$^{-3}$$ grams

Question 8

Which of the following is the correct order of metric prefixes from largest to smallest?

Accepted Answer

mega, kilo, centi, milli

Question 9

A solution is measured as $$1.0 	imes 10$$^{-3}$$ mol/L. Which metric prefix could be used to express this concentration?

Accepted Answer

milli

Question 10

If a sample contains $$1.0 	imes 10$$^{-12}$$ grams of a compound, what is the appropriate metric prefix for this mass?

Accepted Answer

pico

Question 11

Which metric prefix is used for $$10^{-2}$$?

Accepted Answer

centi

Question 12

A chemist needs to convert $$0.005$$ liters to microliters. What is the correct value?

Accepted Answer

$$5.0 	imes 10$$^{3}$$  b5L

Question 13

Which of the following is the correct scientific notation for the prefix 'femto'?

Accepted Answer

$$10^{-15}$$

Question 14

A sample contains $$2.0 	imes 10$$^{3}$$ nanograms of a substance. How many micrograms is this?

Accepted Answer

$$2.0 	imes 10$$^{0}$$  b5g$

Question 15

Which metric prefix would you use to express a length of $$10^{-12}$$ meters?

Accepted Answer

pico

Question 16

A solution contains $$1.0 	imes 10$$^{-6}$$ grams of solute per liter. What is this concentration in $$rac{ b5g}{L}$$?

Accepted Answer

$$1.0 rac{ b5g}{L}$$

Question 17

Which metric prefix is used for $$10^{-6}$$?

Accepted Answer

micro

Question 18

A sample contains $$1.0 	imes 10$$^{-3}$$ liters. How many milliliters is this?

Accepted Answer

$$1.0 mL$$

Question 19

Which of the following is the correct scientific notation for the prefix 'kilo'?

Accepted Answer

$$10^{3}$$

Question 20

A solution contains $$1.0 	imes 10$$^{-9}$$ grams of solute per liter. What is this concentration in $$rac{ng}{L}$$?

Accepted Answer

$$1.0 rac{ng}{L}$$

Metric Prefixes and Unit Conversions in Analytical Chemistry

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