A percent composition is a percentage of a compound in a sample expressed as a fraction of the whole sample.

a. True

b. False

A water molecule collides with a sugar molecule. What type of energy is transferred in this interaction? Select one: Sound energy Kinetic energy Chemical energy Heat energy

Glycolysis is the process by which energy is harvested from glucose by living things. Several of the reactions of glycolysis are thermodynamically unfavorable (nonspontaneous), but proceed when they are coupled with other reactions.

Tansition elements form: A) colorless ions in solution, multiple positive oxidation states B) colorless ions in solution, multiple negative oxidation states C) colored ions in solution, multiple positive oxidation states D) colored ions in solution,

What is another name for a compound known as a salt? Molecule Covalent compound Element Ionic compound

Calculate the average atomic mass of bromine. One isotope of bromine has a molar mass of 78.92 g/mol and a relative abundance of 50.69%. The other major isotope of bromine has a molar mass of 80.92 g/mol and a relative abundance of 49.31%.

J. J. Thomson A) Electrons are in orbital levels. John Dalton B) Atoms are the smallest unit of an element. Ernest Rutherford C) Electrons are scattered within the atom. Niels Bohr D) Protons are at the center of an atom.

Which answer best describes an alloy

Olive oil has a density of 0.92 g/mL. How much would 1 liter of olive oil weigh in grams?

How many grams of CO are needed to react with an excess of Fe2O3 to produce (210.3 g Fe) 209.7 g Fe? Show your work. CO (g) + Fe2O3 (s) - - > Fe (s) + CO2 (g)

Which is the molar mass of H2O? 10.02 g/mol 16.00 g/mol 17.01 g/mol 18.02 g/mol