How many grams of iron can be made from 16.5 grams of fe2o3

Determine the molecular formula of a compound that contains 26.7%, 12.1%, and 61.2%, and has a molar mass of 812 g/mol.

The density of water is 1.00 gram/milliliter. What is the volume in milliliters of 1.00 mole of water? Express your answer to the correct number of significant figures. The volume of 1.00 mole of water is milliliters.

An element is ___. A. a solid form of a substance B. a substance with only one type of atom C. the smallest particle of matter D. the smallest particle of an atom

If 75 g of liquid water in a calorimeter changes temperature from 25 degrees C to 75 degrees C how much heat was transferred

Read the article and then answer these questions. Radium and Polonium How does she explain the activity of uranium when amounts of this element are changed?

What is the relationship between chemical equilibrium and the rates of forward and reverse reaction

What is the valence of Fluorine

When liquid helium is exposed to room temperature, it forms a gas. Which best explains why this happens? The liquid helium absorbs energy from the air in the room. The particles in the air absorb the energy of the liquid helium.

Why was Bohr's model considered more accurate than Dalton's model?

Select the statements that correctly describe a buffer. 1) The pH of a buffer solution does not change significantly when any amount of a strong acid is added. 2) A buffer is generally made up of a weak acid and its conjugate base.