1. If you have 20 grams of parent material and TWO half-lives go by, how much parent material do you have remaining? How much daughter material do you now have?

What do Hubris mean?

How are coal power plants and nuclear power plants similar

What would the Net Ionic Equation be for the following: NH3 (aq) + HC2H3O2 (aq) NaOH (aq) + H2SO4 (aq) H2S (aq) + Ba (OH) 2 (aq)

Alkanes are hydrocarbons that contain what type of bonds? A) Single covalent bonds only B) At least one double bond C) At least one triple bond D) Ionic bonds

What is the highest principal energy level for an electron in an atom of sulfur in the ground state?

What starting matirials do cells need for cellular respiration

What is the velocity of a wave with a frequency of 77 Hz and a wavelength of 200 m?

For the reaction: n2 (g) + 3h2 (g) ⇔ 2nh3 (g), at a particular temperature, the concentrations of n2, h2 and nh3 are 2.1 x 10-3 m, 3.2 x 10-2 m, and 1.8 x 10-1 m, respectively. calculate a value of k for this reaction

Empirical formula for 6. 63.52% Fe, 36.48% S

Name the term used for the configuration of a stereoisomer having R groups whose positions alternate from one side to the other side along the backbone chain.