An atom of chlorine has several valence electrons in its

a. second shell.

b. first shell. End of exam

c. third shell.

d. nucleus.

A 2.45 g sample of a gaseous oxide of nitrogen occupies a volume of 1.34 l at 28°c and 745 mmhg. What is the most likely formula for the gas?

The Ksp of barium sulfate (BaSO4) is 1.1 * 10-10. What is the solubility concentration of sulfate ions in a saturated solution at 25°C? a. 1.0 x 10^-5m b. 1.5 x10^-5m c. 5.5 x 10^-11m d. 7.4 x 10^-6m

What is the purpose of adding alum in the water treatment process?

Iron atoms have been detected in the sun's outer atmosphere, some with many of their electrons stripped away.

Is boron an element a compound a heterogeneous mixture or a homogeneous mixture?

100 ml oxygen at 1.75 atm and 200ml nitrogen at 0.6 atm are passed to a 500 ml vessel. Calculate the total pressure of the mixture in the vessel at same temperature

Which is the best metal to use in an alloy to increase its electrical conductivity

Ice does not need to melt into liquid water before it can return to the atmosphere as water vapor. a. True b. False

How much ice at a temperature of - 17.5 ∘C must be dropped into the water so that the final temperature of the system will be 31.0 ∘C?

Why does a gas fill completely the vessel in which it is kept?