Chapter 1: Q31 E (page 57)
Explain the difference between extensive properties and intensive properties.
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Chapter 1: Q31 E (page 57)
Explain the difference between extensive properties and intensive properties.
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Perform the following calculations and report each answer with the correct number of significant figures.
(a) 62.8 × 34
(b) 0.147 + 0.0066 + 0.012
(c) 38 × 95 × 1.792
(d) 15 – 0.15 – 0.6155
(e) 8.78 × (0.0500/ 0.478)
(f) 140 + 7.68 + 0.014
(g) 28.7 – 0.0483
(h) (88.5 − 87.57)/ 45.13
If an aspirin tablet contains 325 mg aspirin, how many grams of aspirin does it contain?
Question: The mercury content of a stream was believed to be above the minimum considered safe – 1 part per billion (ppb) by weight. An analysis indicated that the concentration was 0.68 parts per billion. What quantity of mercury in grams was present in 15.0 L of the water, the density of which is 0.998 g/ml? \(\left( {1ppbHg = \frac{{1ngHg}}{{1gwater}}} \right)\)
What is the density of a liquid with a mass of 31.1415 g and a volume of 30.13 cm³?
Classify each of the following changes as physical or chemical:
(a) coal burning
(b) ice melting
(c) mixing chocolate syrup with milk
(d) explosion of a firecracker
(e) magnetizing of a screwdriver
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