Complete the arithmetic and report the answer to the correct number of significa

Question

Complete the arithmetic and report the answer to the correct number of significant figures. Remember to round up or down appropriately when you reduce the number of significant figures Convert the given numbers to scientific notation. Use calculator format for scientific notation, e.g. 6.02 times 10^23 is 6.02E23. and 5.32 times 10^-4 is 5.32E-4. Determine the number of significant figures in each measured value. In 4.020. both zeros are significant. In 6.02E23, only 6.02 is significant. In 1.500.000. the zeros are not significant.

Explanation / Answer

Question 1:

a) 7.2054 or 7.21
b) 4396
c) 0.04897 = 0.05
d) 0.4093 or 0.41

Question 2:
a) 3.402 = 0.34*101 g
b) 1500 ft = 1.5x103 ft
c) 0.0731 L = 7.31x10-2 L
d) 2630 ms = 2.63x103 ms

Question 3:
a) 13.047 has 5 significant figures
b) 4.020 has 4 significant figures
c) 6.02x1023 has 3 significant figures
d) 1500000 or 1.5x106 has 2 significant figures

Hope this helps

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