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Biblioteka

Quiz 3

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Posljednje ažuriranje 9 months ago
4 questions
25
Pitanje 1
1.

Match the following numbers with their correct number in scientific notation

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

635,789,000

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6.35789 x 105

63,578.9

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6.35789 x 102

0.0635789

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6.35789 x 108

635.789

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6.35789 x 10-2

635,789

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None of the above

25
25
25
Pitanje 2
2.

What exponent should you use if you convert the following numbers to scientific notation

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

0.8883

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none of the above

538

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5

0.00484889898

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1

32.3889

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-1

789793

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-3

Pitanje 3
3.

Match each statement with its function

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

My metal mass was 89.24g, the volume of the water was 28.1mL before and 62.3 mL after adding water

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Hypothesis

My results supported my hypothesis since the density of my metal cylinder closely matched the 2.7 g/mL accepted density and other properties of Aluminum

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Materials

If I measure the mass and volume of a metal then I can identify the metal based on its density

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Procedure

Graduated cylinder, metal cylinder, water and scale

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Results

Find mass of metal cylinder, volume of water in graduated cylinder before and after adding metal

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Conclusion

Pitanje 4
4.

If you find the mass of aluminum is 89.24g, the initial volume of the water it displaces is 28.1 mL, and the final volume of the water after the metal is added is 62.3 mL, calculate the correct value for each of the following

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

8.3

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Volume of Aluminum in mL

3.7

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Calculated density of metal in g /mL

2.60

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Error in g/mL

34.2

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Percent error

0.10

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None of the above