The periodic table below shows the state of matter of elements at standard temperature and pressure.

Based on the periodic table above, which of the following elements is a gas at standard temperature and pressure?

A.

K

B.

Ca

C.

Br

D.

Ar

How many milliliters of 0.100 M Ba (OH) 2 are required to neutralize 20.0 mL of 0.250 M HCl?

16. In a reaction that has reached equilibrium, a. The forward and reverse reactions are occurring at the same rate. b. The reactants and products are in equal concentrations. C. The forward reaction has gone further than the reverse reaction. d.

What type of reaction is Zn + 2HCl > ZnCl2 + H2

They are lightning rods, and their purpose is to? A) protect the building in the event of thunder. B) protect the building in the event of a lightning strike. C) protect the building in the event of rain.

Muriatic acid is the commercial name for hydrochloric acid that can be purchased from hardware stores as a solution that is 28% (w/w) hcl. what mass of this solution contains 15 g of hcl?

How many atoms of gold (Au) are present in a sample of 2.5 mol Au? A. 1.5 * 1024 atoms Au B. 1.5 * 1023 atoms Au C. 4.2 * 1024 atoms Au D. 4.2 * 1023 atoms Au

what might cause the goldfish population to drop if the temperature moves out of its normal range? Name three things

Why must a chemistry experiments performed in a well ventilated room?

What kind of chemical bond does salt have?

How does phosphorus enter the human body?