What is the empirical formula of a compound that contains 50.0% carbon, 6.7% hydrogen, and 43.3% oxygen by mass?

A.

CH3O

B.

C3H5O2

C.

C2H2O5

D.

C3H205

E.

C1H3O5

Progesterone is a hormone that contains two ketone groups. The oxygen in the ketone group can function as a hydrogen bond acceptor. Select the amino acids that have side chains that can form a hydrogen bond with progesterone at pH 7. a. threonine. b.

Matter that is always made up of the same combination of atoms is defined as a (n)

What is the relationship between the kinetic energy of molecules in an object and the object temperature? As the kinetic energy of the molecules decreases the temperature increases.

On a mission to a newly discovered planet, an astronaut finds chlorine abundances of 13.85 % for 35Cl and 86.15 % for 37Cl. What is the atomic mass of chlorine for this location? The mass of 35Cl is 34.9700 amu. The mass of 37Cl is 36.9700 amu.

Which planet is most like earth in size and makeup

How mant atoms are in 3N2

The type of nuclear decay an unstable nucleus will undergo depends on its ratio of neutrons to protons. The radioisotope cobalt-65 has a ratio of neutrons to protons of 1.41, which is too high for a nucleus of this size.

1.87 $/gal to dollars per liter, Express your answer using three significant figures.

What can a student do to increase the force of attraction of a magnet on an iron block?

Which elements can react to produce a molecular compound?