Dimensional Analysis and Significant Figures

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Dimensional Analysis and Significant Figures

QUESTION 15
Fill in the blank with the correct word from the Word Bank.
Word Bank

Chemical

Physical

Dimensional

Numerical

Dimensional ✓ analysis helps you check your units and make sure that your calculations are correct.


QUESTION 16
Select the best choice from the drop-down menu(s).
In any number, nonzero digits are always ✓ significant and zeros are sometimes ✓ significant.


QUESTION 17
Select the correct answers.
Which of these zeros are always significant?
leading zeros in decimal numbers less than 1
trailing zeros in decimal numbers less than one ✓
zeros that come between nonzero digits ✓
trailing zeros in whole numbers
leading zeros in whole numbers
zeros that come before nonzero digits


QUESTION 18
Fill in the blank(s) by typing the correct number(s).
Calculate the following and give your answer to the correct number of significant figures: 
0.075 X 1.224 =
0.092 ✓
3.21 X 3600 =
12,000 ✓

QUESTION 19
Fill in the blank(s) by typing the correct number(s).
Fill in the table below by typing the count of significant figures each of the given numbers has.

Count of significant figures

Number

1 ✓

6,000

2 ✓

0.056

4 ✓

506,600

6 ✓

0.556000

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