U0L1 Formative: Foundations of Chemistry

Try the rest on your own, then check your answers!

Math Response

Write in scientific notation: 24500

Type answer here

Correct Answer: 2.45\times10^4

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Math Response

Write in scientific notation: 356

Type answer here

Correct Answer: 3.56\times10^2

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Math Response

Write in scientific notation: 0.222

Type answer here

Correct Answer: 2.22\times10^{-1}

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Math Response

Write in scientific notation: 12200

Type answer here

Correct Answer: 1.22\times10^4

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Try the rest on your own, then check your answers!

Math Response

Write in standard notation: $$2.15\times10^{-4}$$

Type answer here

Correct Answer: 0.000215

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Math Response

Write in standard notation: $$3.14\times10^{-6}$$

Type answer here

Correct Answer: 0.00000314

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Math Response

Write in standard notation: $$9.22\times10^5$$

Type answer here

Correct Answer: 922000

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Math Response

Write in standard notation: $$9.57\times10^2$$

Type answer here

Correct Answer: 957

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Math Response

What is the volume of a chunk of lead with a mass of 255 g and a density of 11.34 g/cm^3?

Type answer here

Correct Answer: 22.49

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Math Response

What is the volume (in μL) of ethanol if the mass is 54.0 oz (Density = 789 mg/mL, 28.35 g/oz)? Give your answer in scientific notation with 2 places past the decimal.

Type answer here

Correct Answer: 1.94\times10^6

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Math Response

How many sig figs are in 5.010?

Type answer here

Correct Answer: 4

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Math Response

How many sig figs are in 0.25050?

Type answer here

Correct Answer: 5

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Math Response

How many sig figs are in 0.039010?

Type answer here

Correct Answer: 5

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Math Response

How many sig figs are in 2500?

Type answer here

Correct Answer: 2

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Math Response

Evaluate the following. Write your answer with the appropriate number of sig figs.

$$11-3.92\ =$$

Type answer here

Correct Answer: 7.1

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Math Response

Evaluate the following. Write your answer with the appropriate number of sig figs.

$$2550.0-31=$$

Type answer here

Correct Answer: 2519

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Math Response

Evaluate the following. Write your answer with the appropriate number of sig figs.

$$25.1\times30.11\ =$$

Type answer here

Correct Answer: 756

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Math Response

Evaluate the following. Write your answer with the appropriate number of sig figs.

$$10.2\times2.1=$$

Type answer here

Correct Answer: 21

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