Chapter 1: Q75E (page 9)
A long ton is defined as exactly 2240 lb. What is this mass in kilograms?
Short Answer
The mass in kilogram is 1016.0 kg.
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Chapter 1: Q75E (page 9)
A long ton is defined as exactly 2240 lb. What is this mass in kilograms?
The mass in kilogram is 1016.0 kg.
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Many medical laboratory tests are run using 5.0 μL blood serum. What is this volume in milliliters?
Round off each of the following numbers to two significant figures:
(a) 517
(b) 86.3
(c) 6.382 ×103
(d) 5.0008
(e) 22.497
(f) 0.885
The weather in Europe was unusually warm during the summer of \(1995\). The TV news reported temperatures as high as \(45{\rm{ }}^\circ C\). What was the temperature on the Fahrenheit scale?
The following quantities were reported on the labels of commercial products. Determine the number of significant figures in each.
(a) 0.0055 g active ingredients
(b) 12 tablets
(c) 3% hydrogen peroxide
(d) 5.5 ounces
(e) 473 mL
(f) 1.75% bismuth
(g) 0.001% phosphoric acid
(h) 99.80% inert ingredients
An irregularly shaped piece of a shiny yellowish material is weighed and then submerged in a graduated cylinder, with results as shown.

(a) Use these values to determine the density of this material.
(b) Do you have any reasonable guesses as to the identity of this material? Explain your reasoning.
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