What is true of acids?

a. They are poor electrolytes.

b. They have a pH above 9.

c. They have a pH below 7.

d. They have a strong affinity for H ions.

A gas is contained in a thick-walled balloon. When the pressure changes from 18.7 psi to 20.2 psi, the volume changes from 0.475 L to 1.054 L and the temperature changes from K to 465 K.

When heat is supplied to a solid, the molecules vibrate but do not leave their positions. Why is this behavior observed?

which is greater, the number of compounds or the number of elements? the number of elements or the number of isotopes?

What is one thing NOT impacted by Acid Rain. Granite Metal Limestone

The largest identified asteroid is ceres and is about three times the size of the moon True or False?

What is the general form for the simplest type of acid-base reaction?

Which element has a larger atomic radius than sulfur? chlorine cadmium fluorine oxygen

Which of the following procedures is used when refining petroleum? Increase the temperature of the oil. Decrease the temperature of the oil. Increase the pressure of the oil. Decrease the pressure of the oil.

What is the mass of calcium in 2.3•10^23 molecules of calcium phosphate

How many metaloides are found on the periodic table