From Questions to Solutions

Water freezes at [tex]0^\circ[/tex] Celsius and [tex]32^\circ[/tex] Fahrenheit. It boils at [tex]100^\circ[/tex] Celsius and [tex]212^\circ[/tex] Fahrenheit.

A calibration curve gives a slope of 35.9 M⁻¹. If the path length equals 1.8 cm, calculate the molar absorptivity (\(\varepsilon\)) in M⁻¹ cm⁻¹.

How much heat must be removed to freeze a tray of ice cubes if the water has a mass of 40.0 g? (The molar heat of fusion of water is

The heat of vaporization of octane is 39.4 kJ, and the entropy of vaporization is 99.0 J/mol·K. What is the boiling point of octane?

2. Describe each number in at least one other way. a) 35.8 million b) 115.2 thousand c) 97.8 ten millions

The specific heat capacity of solid silver is 0.237 J/g °C. (a) Determine the amount of heat energy required to heat a 10.3-g sample of solid silver from 23.9 °C

A powerboat accelerates along a straight path from 0 km/h to 99.8 km/h in 10.0 seconds. Find the average acceleration of the boat in meters per second squared.

Barbara is converting [tex]78^{\circ} F[/tex] to degrees Celsius. First, she subtracts 32 from 78. What is the next step? A. Multiply 46 by [tex]\frac{5}{9}[/tex] B. Multiply 46 by [tex]\frac{9}{5}[/tex] C.

Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities: 38.5, 35.9, 34.9, 28, 14.5, 12.2, 11.2, 9.4, 10.6, 7.6 Find the following for the

38.2 is what percent of 25? Round to the nearest hundredth.

Let [tex]$f(x) = 7x - 4$[/tex]. What is [tex]$f(6)$[/tex]? A. 46 B. 38 C. 42 D. 48

Select the correct answer. Points [tex]A[/tex] and [tex]B[/tex] lie on a circle centered at point [tex]O[/tex]. If [tex]OA = 5[/tex] and [tex]\frac{\text{length of } \widehat{AB}}{\text{circumference}} = \frac{1}{4}[/tex], what is the

An electric bulb rated at 220 V, 100 W is connected with another bulb rated at 220 V, 60 W. If the voltage across the combination is 220 V, what

Let [tex]f(x) = 7x - 4[/tex]. What is [tex]f(6)[/tex]? A. 42 B. 38 C. 46 D. 48

At what Celsius temperature does 0.750 mol of an ideal gas occupy a volume of 35.9 L at 114 kPa?