You should have five questions on this pre-lab assignment. Perform the following

Question

You should have five questions on this pre-lab assignment.

Perform the following calculation and report the answer to the correct number of significant figures (assume all quantities are measured):

8.5 + 8.293 + 12.95

Assuming all numbers come from measurements, perform the following calculation and report the answer to the correct number of significant figures

7.427 x 8.8 x (8.10x107)

Perform the following calculation and report the answer to the correct number of significant figures (assume all quantities are measured):

(4.7 - 30.2) x 5.420

Calculate the number of meters that are in 863.6 inches. Use 2.54 cm = 1 in and show your work.

If you have 8.4 L of water, how many cm3 of water do you have?

Explanation / Answer

1) 8.5 + 8.293 + 12.95= 29.7... for addition and substraction sig figs go to the lowest decimal place

2) 7.427 x 8.8 x (8.10x107) = 5,293,965,600 = 5.8*10^9 ...in this case we round to 2 signifcant figures (lowest possible out of what you started with)

3.) (4.7 - 30.2) x 5.420= -25.5*5.420= -138... Following order of opertations: () first, then multiply. Only round to sig figs after you get the final answer, since the last step was multiplication there should be 3 sig figs in final answer.

4)863.6 in * 2.54cm/1 in * 1m/100cm= 21.94m

5)1 cubic cm = 1 mL so 1,000 cubic cm = 1L 8.4L*1000cm^3= 8,400cm^3

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