Which of the following is a possible formula unit?

CaK2

BF3

Br2O

K2Cl

Whats the atomic mass of lead

If the mass of a material is 111 grams and the volume of the material is 11 cm3, what would the density of the material be?

Which of the following is the minimum energy required for a reaction to occur? A activation energy B orientation energy C ionization energy D collision energy

Why does food wrapped in aluminum foil keep warm for a long time? A) Aluminum foil is an insulator and prevents heat loss by conduction. B) Aluminum foil forms an air-tight seal and prevents heat loss by convection.

What is the name of the ionic compund formed from lithium and bromine?

The ideal gas law shows us how a gas will behave under many conditions. The formula is: P V = n R T Where P = pressure, V = volume, n = amount of the substance, R = ideal gas constant, and T = temperature.

The Suns ultraviolent Rays can cause skin damage including sunburn and even skin

Peas contain 250 kJ per 100 g. You would use the equivalent of 600 g of peas if you slept for.

A sample of gas in a balloon has an initial temperature of 21 ∘C and a volume of 1310 L. If the temperature changes to 70 ∘C, and there is no change of pressure or amount of gas, what is the new volume, V2, of the gas?

Which is a waste product of aerobic respiration? A. water B. energy C. oxygen D. glucose