Which is a substance that could be found in air, water, or soil that is harmful to humans or animals?

What properties would have caused early researchers to name hydrogen "inflammable air"

Which is usually associated with a higher reaction rate? A.) diluting a solution of the reactants B.) adding modeling clay to the reactants C.) removing heat energy from the reactants D.) using a solid with a high surface area in the reactants

Identify which equations represent redox reactions, providing a name for the reaction if appropriate. For those reactions identified as redox, name the oxidant and reductant.

A 3.0 L container holds a sample of hydrogen gas at 300k. If the temperature decreases to 200k and the pressure remains constant what will the volume be

magnesium hydroxide is 54.87% oxygen by mass. how many grams of oxygen are in 175 g sample of the compound

A balloon contains 1.00 mol helium gas at STP. What will the volume of the balloon be if the pressure increases to 2.00 atm?

If 100 mL of a gas were enclosed in a buret at 500 mm Hg, what volume would the gas occupy at 1000 mm Hg at the same temperature? P1V1=P2V2

Would Mn (HPO4) 2 be manganese (II) monohydrogen phosphate?

The fundamental frequency of a violin string is 440 hz. the frequency of its second harmonic is

How much of a 15.0M stock solution do you need to prepare 250ml of a 2.35ml hf solution?