The product of the measurements 2.05 cm x 32 cm should be rounded to

a. 1 significant figure

b. 2 significant figures

c. 3 significant figures

d. 5 significant figures

Which of the following is not a metal? A) Ca B) Se C) Zn D) Mn

A worker is exposed to the following airborne concentrations of ethylbenzene: 8:00 - 10:00 125 ppm 10:15 - 12:15 88 ppm 12:45 - 3:15 112 ppm 3:30 - 5:00 70 ppm What is the 8-hour TWA exposure for the employee (calculate the exposure) ?

When a substance loses or absorbs energy, these 2 things can happen to the substance

In the explosion of a hydrogen-filled balloon, 0.80 g of hydrogen reacted with 6.4 g of oxygen. How many grams of water vapor are formed? (Water vapor is the only product.)

If earth was like an hard boiled egg which part of earth would the egg white reprsent?

25 In general, for a gas at a constant pressure, A the temperature of the gas is inversely proportional to its volume B. the temperature of the gas is inversely proportional to its pressure C.

The vapor pressure of ethanol is 54.68 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin. Calculate the vapor pressure of the solution at 25 °C when 8.054 grams of saccharin, C7H5NO3S (183.

What do microscopic producers supply the atmosphere with?

A particular form of electromagnetic radiation has a frequency of 8.11 x 10^14 hz. What is the energy in joules of one quantum of this radiation?

Which transition elements in the first transition series have anomalous electron configurations?