Q: Convert $$5.6$$ kilograms to milligrams.

$$5.6 \times 10$$^{6}$$\,\text{mg}$

Q: A medical test requires $$0.5$$ liters of solution. How many microliters is this?

$$5 \times 10$$^{6}$$\,\mu\text{L}$

Q: Which of the following is the correct formula to convert a temperature from Fahrenheit to Celsius?

$$^\circ\text{C} = \frac{^\circ\text{F} - 32}{1.8}$$

Q: A biologist needs to convert $$0.0032$$ meters to nanometers for a microscopy experiment. What is the correct value?

$$3.2 \times 10$$^{6}$$\,\text{nm}$

Q: A solution contains $$4.2 \times 10$$^{-2}$$ liters. How many microliters does this represent?

$$4.2 \times 10$$^{4}$$\,\mu\text{L}$

Question 1

A laboratory protocol requires you to convert 0.025 kilometers to centimeters. Which of the following is the correct value?

Accepted Answer

$$2500$$\,	ext{cm}$

Question 2

Which of the following correctly expresses the number 0.000456 in scientific notation?

Accepted Answer

$$4.56 	imes 10$$^{-4}$$

Question 3

A patient’s temperature is measured at $$102^\circ	ext{F}. $$What is this temperature in degrees Celsius?

Accepted Answer

$$39.4^\circ	ext{C}$$

Question 4

You have a solution with a volume of $$250$$ milliliters. How many liters is this?

Accepted Answer

$$0.250$$\,	ext{L}$

Question 5

A DNA sample is measured as $$3.2 	imes 10$$^{-6}$$ grams. Which metric prefix best describes this mass?

Accepted Answer

Micrograms

Question 6

Convert $$5.6$$ kilograms to milligrams.

Accepted Answer

$$5.6 	imes 10$$^{6}$$\,	ext{mg}$

Question 7

A scientist records a measurement as $$7.89 	imes 10$$^{2}$$ meters. What is this value in standard decimal notation?

Accepted Answer

$$789$$\,	ext{m}$

Question 8

A medical test requires $$0.5$$ liters of solution. How many microliters is this?

Accepted Answer

$$5 	imes 10$$^{6}$$\,\mu	ext{L}$

Question 9

Which of the following is the correct formula to convert a temperature from Fahrenheit to Celsius?

Accepted Answer

$$^\circ	ext{C} = \frac{^\circ	ext{F} - 32}{1.8}$$

Question 10

A biologist needs to convert $$0.0032$$ meters to nanometers for a microscopy experiment. What is the correct value?

Accepted Answer

$$3.2 	imes 10$$^{6}$$\,	ext{nm}$

Question 11

Which of the following best explains why the metric system is preferred in scientific research?

Accepted Answer

It is a decimal system, allowing easy conversion by moving the decimal point.

Question 12

A student measures a length as $$4.5$$ decimeters. How many millimeters is this?

Accepted Answer

$$450$$\,	ext{mm}$

Question 13

Which of the following numbers is correctly written in scientific notation?

Accepted Answer

$$5.6 	imes 10$$^{2}$$

Question 14

A sample weighs $$0.002$$ grams. Express this mass in milligrams.

Accepted Answer

$$2$$\,	ext{mg}$

Question 15

A scientist needs to convert $$1.25$$ gallons to liters for an international publication. Given $$1$$ gallon $$= 3.785$$ liters, what is the correct value?

Accepted Answer

$$4.731$$\,	ext{L}$

Question 16

Which of the following is the correct scientific notation for the number $$123,000,000$$?

Accepted Answer

$$1.23 	imes 10$$^{8}$$

Question 17

A researcher needs to convert $$0.75$$ inches to centimeters. Given $$1$$ inch $$= 2.54 cm$$, what is the correct value?

Accepted Answer

$$1.905$$\,	ext{cm}$

Question 18

A solution contains $$4.2 	imes 10$$^{-2}$$ liters. How many microliters does this represent?

Accepted Answer

$$4.2 	imes 10$$^{4}$$\,\mu	ext{L}$

Question 19

A scientist records a measurement as $$6.785544 	imes 10$$^{5}$$ grams. Which of the following is the correct way to write this number in standard decimal notation?

Accepted Answer

$$678,554.4$$\,	ext{g}$

Unit 0: Fundamentals – Introduction to the Metric System and Scientific Notation

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