How many atoms are in 0.8288 grams of sodium, Na?

1.670 x 10^25 atoms

1.147 x 10^25 atoms

2.170 x 10^22 atoms

3.159 x 10^22

If a gas has an initial pressure of 101kPa and a volume of 10L, then it expands to a volume of 20L what is the new pressure?

Which of the following rules determines the charge on a monatomic ion formed from a nonmetal? A. 8 - group number B. 8 x group number C. group number - 8 D. group number / 8

Will nitrogen atoms form bonds with other atoms? why?

Gallium is composed of two naturally occurring isotopes: Ga-69 (60.108%) and Ga-71. The ratio of the masses of the two isotopes is 1.0290. What is the mass of Ga-69?

What factors determine an objects kinetic energy

Which of the following subatomic particles is found the farthest from the center of the atom? a. A neutral particle that is found in the electron cloud b. A negative particle that is found in the nucleus c.

The nonmetals in groups 5a, 6a, and 7a question 15 options: lose electrons when they form ions. form ions with charges of 3-, 2-, and 1-, respectively. form positively charged ions. form ions with a numerical charge equal to their group number.

How many protons are in a electrons?

What is the sum of the numbers of neutrons and electrons in the ion 208 Pb2+?

The specific heat capacity of concrete is small this means that