An element has two naturally-occurring isotopes. The mass numbers of these isotopes are 113 amu and 115 amu, with natural abundances of 5% and 95%, respectively. Calculate its average atomic mass. Report your answer to 1 decimal place.

How many atoms are there in 5.70 mol of mg

Enzymes affect the reactions in living cells by changing the

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.