3. 175oK - 273 = -98 oC x 1.8 + 32 = -144.4 oF oK → oC → oF
Question 4
Be sure to show the correct number of significant figures in each calculation.
1. Show the calculation of the mass of a 17.9 ml sample of chloroform with density
of 1.49 g/ml
2. Show the calculation of the volume of 19.4 grams of cresol with density of 1.02
g/ml
Answer:
1. M = D x V = 1.49 x 17.9 = 26.7 g
2. V = M / D = 19..02 = 19.0 ml
Question 5
1. 1.35601 contains ? significant figures.
2. 0.151 contains ? significant figures.
3. 1.35601 + 0.151 = ? (give answer to correct number of significant figures)
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