Most of the mass of an atom is contained:

in the electrons

in the empty space around the nucleus

in the protons

in the nucleus

Sweat is a mixture of water, dissolved solids, and chemicals. How does the water become separated from the sweat leaving a person's skin salty? A. It separates naturally. B. It separates due to density. C. It separates by evaporation. D.

When ethane (C2H6) burns, it produces carbon dioxide and water: 2C2H6 (g) + 7O2 (g) - - > 4CO2 (g) + 6H2O (l) How many moles of water will be produced when 16 moles of ethane are burned? ? 48 moles ? 32 moles ? 56 moles ? 64 moles

Which of the following contains the smallest amount of matter? A 30g. b 3000 cg. C 30 dg. D 0.30 kg

What is the atomic weight of silver?

CH4 + 2O2 = CO2 + 2H2O

What is the relationship between pH and H concentration

Select the correct answer. Consider an atom that has an electron in an excited state. The electron falls to a lower energy level. What effect does that have on the electron? ОА ОВ. The electron releases energy in the form of light.

What is the volume in milliliters of 350 m koh needed to completely neutralize 15.0 ml of a. 250 m h2so4 solution?

What happens to a solid object with a density that is less than the density of water when it is placed in water?

What is a naturally occurring, inorganic solid with a definite structure and composition is called what?