The radius of a hydrogen atom is 37 pm and its mass is 1.67 * 10-24 g. What is the density of the atom in grams per cubic centimeter? Assume the atom is a sphere with:

Volume = (4/3) (3.14) (r^3)

What is the bond type of nh3

How many moles of CCl4 are there in 34.99 g?

A buffer of pH 9.24 is to be prepared from a weak acid and its salt. The best acid from which to prepare the buffer is (A) phthalic acid, K1 = 1.3 x 10-3 (1st ionization) (B) hydrohen phthalate, K2 = 3.

Which pair of elements is most likely to chemically combine and form ionic bonds, chlorine and chlorine or lithium and chlorine, or carbon and hydrogen, or slfur and oxygen?

A certain material has a mass of 565 g while occupying 50 cm3 of space. what is this material?

Blank is the theory that explains how large pieces of earths outermost layer move and change shape

Describe the energy transformation that occurs in a clock

Electronegativity tends to tends to increase from left to right across a row., becasue

Which formula equation shows a reversible reaction? 2 upper N a plus upper F subscript 2 right arrow 2 upper N a upper F. Upper C a upper C upper O subscript 3 right arrow upper C a upper O plus upper C upper O subscript 2.

Sprite: When mixed with red cabbage water, resulting solution turned red. Watermelon juice: When mixed with red cabbage water, resulting solution turned pink/purple. Egg whites: When mixed with red cabbage water, resulting solution turned green.