What effect does evaporation have on the solubility of salt?

If 0.756L of gas exerts a pressure of 94.6kPa, what would the volume be at standard pressure (101.33kPa) ?

The chemical formula for beryllium oxide is BeO. A chemist determined by measurements that 0.045 moles of beryllium participated in a chemical reaction. Calculate the mass of beryllium that participated in the chemical reaction.

What occurs when Cr^3 + ions are reduced to Cr^2 + ions? a) electrons are lost and the oxidation number of chromium increases b) electrons are lost and the oxidation number of chromium decreases c) electrons are gained and the oxidation number of

Which of the following atoms will not react with water? A. K B. Li C. Pb D. Na

When two atoms of the same element have different numbers of neutrons and therefore different atomic masses, what are they? a) isotopes b) isomers c) molecules

What are the products of photosynthesis? A. Glucose and oxygen B. Oxygen, solar energy, and glucose C. Carbon dioxide, water, and solar energy D. Hydrogen, oxygen, and carbon

A sample of a substance that has a density of 0.824 g/mL has a mass of 0.421 g. Calculate the volume of the sample.

The tyndall effect is used to detect A: suspensions B:liquid solitions C:tyndalls D:colloida

Which of the following is not an empirical formula? A. C3H8O B. Sb2S3 C. C2N2H8 D. BeCr2O7

The molar heat of fusion for water is 6.01 kJ/mol. How much energy must be added to a 75.0-g block of ice at 0°C to change it to 75.0 g of liquid water at 0°C?