A weather balloon is inflated to a volume of 2.2*10^5L with 37.4g of helium. What is the density of helium in grams per liter?

The type of bond produced when atoms share electrons equally

An acid a. has a high pH in solution. b. turns blue litmus paper to red. c. releases hydroxyl ions in solution. d. has more hydroxyl than hydrogen (or hydronium) ions.

Molten gallium reacts with arsenic to form the semiconductor, gallium arsenide, GaAsGaAs, used in light emitting diodes and solar cells: Ga (l) + As (s) → GaAs (s) Ga (l) + As (s) → GaAs (s) If 4.00 gg of gallium is reacted with 5.

In a nuclear reaction, which of the following must be conserved? A. energy B. mass C. charge D. the number of electrons

Explain how strong bonds give water a high specific heat.

A cube of iron has a temperature of 35°C. It is placed on top of a hot surface with a temperature of 175°C. What will happen to the iron? A) Its temperature will decrease. B) Heat will flow from the hot surface into the iron.

Density differences cause the

Why can't you balance a chemical equation by changing the subscript?

Which level of organization is best represented by the corn plant? tissue, the highest level of organization organ, the lowest level of organization organism, the level of organization directly above organ system organ system, the level of

What is one product of a condensation reaction between two amino acids, such as glycine and alanine?