Which of the following waves are mechanical waves?

A.

light waves

B.

microwaves

C.

radio waves

D.

sound waves

According to valence bond theory, which kind of orbitals overlap to form the p-cl bonds in pcl5?

How likely is it that a scientific theory is correct?

How many atoms are in 0.23 moles of calcium?

Molarity of a salt water solution of "0.47" moles of NaCl dissolved in a volume of 0.25L

The acid dissociation constant for boric acid, H3BO3, is 5.8 * 10-10. Calculate the dissociation constant, Kb, for the borate ion (BO33-). A. 5.8 x 10^-10 B. 1.7 x 10^-5 C. 1.1 x 10^-4 D. 2.7 x 10^-3

What are some disadvantages of incinerators?

What mass of potassium chlorate would contain 40grams of oxygen?

Identical forces act for the same length of time on two different masses. The change in momentum of the smaller mass is A) smaller than the change in momentum of the larger mass, but not zero. B) zero.

How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second? (Note that the half life of Uranium-238 is 4.468x109 years)

A base can neutralize an acid. true or false