How many moles (of molecules or formula units) are in each sample? 0.2346 g C8H18
Express your answer to four significant figures.

nC8H18 =

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Which of the following would not diffuse through the plasma membrane by means of simple diffusion? 1 oxygen 2 glucose 3 a steroid hormone 4 a lipid soluble vitamin