Chapter 2: Problem 86
Which is larger, a Celsius degree or a Fahrenheit degree? Explain.
Chapter 2: Problem 86
Which is larger, a Celsius degree or a Fahrenheit degree? Explain.
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Get started for freeA student measures the mass of an object three times and reports the numeric average of her measurements. If her three measurements are \(212 \mathrm{~g}\), \(260 \mathrm{~g}\), and \(233 \mathrm{~g}\) and the actual mass is \(235 \mathrm{~g}\), which of the following statements is true: (a) The student is accurate but not precise. (b) The student is precise but not accurate. (c) The student is both accurate and precise. (d) It is impossible to tell whether the student is accurate and \(/\) or precise without knowing how she determined the mass.
Indicate the number of significant figures in: (a) \(0.503200 \mathrm{~mL}\) (b) \(2000 \pm 5\) (c) \(2000 \pm 50\) (d) \(2000 \pm 0.5\) (e) \(200.1\)
The density of a certain liquid is \(1.15 \mathrm{~g} / \mathrm{mL}\). What mass in grams of the liquid is needed to fill a \(50.00\) -mL container? Do this problem by the method of algebraic manipulation, beginning with the equation density \(=\) mass/volume and showing all steps.
Which one of the following expresses the measured value \(0.000003 \mathrm{~L}\) with the correct number of significant figures? (a) \(3 \mathrm{~mL}\) (b) \(3 \mu \mathrm{L}\) (c) \(3.00 \times 10^{-6} \mathrm{~L}\) (d) \(3.00 \times 10^{-3} \mathrm{~mL}\)
The specific heat of copper is \(0.385 \mathrm{~J} / \mathrm{g} \cdot{ }^{\circ} \mathrm{C}\). How much heat energy in kilojoules is required to raise the temperature of \(454 \mathrm{~g}\) of copper from \(40.0{ }^{\circ} \mathrm{C}\) to \(75.0^{\circ} \mathrm{C} ?\)
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