From Questions to Solutions

The vapor pressure of ethanol at 30°C is 98.5 mmHg, and the heat of vaporization is 39.3 kJ/mol. Determine the normal boiling point of ethanol from this data.

What is 1.0 plus 38.2?

If a sample of radon is taken from a room that is known to be at 87 pCi/L and is kept in a well-sealed container, what will the approximate radon

A pool is 39.4 m long and 29.7 m wide. If the average depth of water is 3.30 ft, what is the mass (in kg) of water in the pool?

Which three temperature readings all mean the same thing? A. 373 Kelvin, 100 degrees Celsius, 273 degrees Fahrenheit. B. 273 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit. C. 100 Kelvin,

The high temperatures (in degrees Fahrenheit) of a random sample of 5 small towns are: 99.6, 99.7, 97.9, 98.6, and 97.7. Assume high temperatures are normally distributed. Based on this

If a person inhales 82.3 g of O₂ in an hour, what volume (in L) does this amount occupy at 1.03 atm and 36.9 °C? Be sure your answer has

In the laboratory, a student finds that it takes 189 joules to increase the temperature of 14.9 grams of solid aluminum from 24.4 to 39.3 degrees Celsius. What is the

Calculate the median given the following data: Mid-value: 20, 30, 40, 50, 60, 70 Male (c.f.): 12, 25, 42, 46, 48, 50 Note: c.f. = Cumulative Frequency

A 220 V A.C. supply is connected between points A and B. What will be the potential difference \( V \) across the capacitor? Assume an ideal diode. A. 0

Use technology to solve the following problem: A sample of size 45 will be drawn from a population with a mean of 94 and a standard deviation of 14. Find

Karen has a red ribbon that is 18 feet long and a blue ribbon that is Sophie long. She wants to cut both ribbons into pieces that are all the

A lab is testing the amount of a certain active chemical compound in a particular drug that has been recently developed. The manufacturer claims that the average amount of the

What is the normal oral temperature range? A. 96.6-98.6°F B. 98.6-100.6°F C. 97.6-99.6°F D. 96.6-100.6°F

Nina has 3 feet of ribbon that she wants to cut into 8 equal-sized pieces. What is true about the length of each piece of ribbon? A) Each piece is