How many helium atoms will have the same mass as a sulfur atom?

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?

Which of the following is true about the speed of light? it depends on the wavelength.

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound