Measurements, Calculations, and Dimensional Analysis

I’m working on a Chemistry question and need guidance to help me study.

********* for last qustion Q9 you have to answer two times by diffrent words *****

Question 1

To write 0.000216 in scientific notation is:

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Question 2

To write 2 × 105 in standard notation is:

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Question 3

How many significant figures are in the measurement 9.9240 x 106 ?

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Question 4

How many significant figures are in 0.00340 m?

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Question 5

How many significant figures are in 0.0001 kg?

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Question 6

Write the answer for each expression using scientific notation with the appropriate number of significant figures.

12.3 * 8.2 * 0.4 = ?

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Question 7

Write the answer for each expression using scientific notation with the appropriate number of significant figures.

12.32 + 88.2 0.004 = ?

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Question 8

Write the answer for each expression using scientific notation with the appropriate number of significant figures.

12.3 * 8.2 * 0.4 = ?

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Question 9

28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark, from this information, calculate the density of iron.

Please report your answer in g/mL

********* for last qustion Q9 you have to answer two times by diffrent words *****

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