What is the difference between a molecule, compound and an element?

A chemist reported that 100 gallons of gas were available in a laboratory which property of the gas to the chemist report? A. Length B. Mass C. Temperature D. Volume

Explain why a solution can have many solutes, but only one solvent.

Which compound in the following pair would you expect to have the greater dipole moment μ? Why? Select the single best answer. NaF or HF Hydrogen fluoride has the larger dipole moment because sodium has a greater atomic radius than hydrogen.

How many base pairs are in the real human genome?

Which segment represents melting?" Temperature (°C) Time (minutes)

How is firelight produced

Systems in nature tend to undergo changes toward (1) lower energy and less disorder (2) lower energy and more disorder (3) higher energy and less disorder (4) higher energy and more disorder

Which of the following pairs does not share the same empirical formula? 1) CH2O and C3H6O3 2) PbCl2 and PbCl4 3) NO2 and N2O4 4) C3H12 and CH4

Which subatomic particle is the lightest? (a) neutron (b) proton (c) electron (d) all of the above (obviously not the last one, I guess)

How do you figure out the number of protons in a element