Neon has 2 isotopes. Neon-20 has a mass of 19:992 amu and neon-22 has a mass of 21 amu. In any sample of 100 neon

atoms, 90 will be neon-20 and 10 will be neon-22. Calculate

the average atomic mass.

What will be the amount of sugar in milligrams if the size of the milk chocolate bar is reduced from 12.630 g to 5.000 g?

What is the molarity of 1.0L NaCl solution containing 1 mole of the solute

What volume in liters will be occupied by 1.20 moles of helium gas at a pressure of 3.675 atm and 100*C?

Which of the following actions occur during the process of fusion? 1.) atoms are divided 2.) atoms are broken apart 3.) atomic nuclei are united 4.) atomic nuclei are split

A gas is originally at a temperature of 23.13 degrees C. What temperature must it be heated to triple its volume with constant pressure?

What is the solubility of m (oh) 2 in a 0.202 m solution of m (no3) 2? ksp 4.45*10^-12?

Describe three physical changes that occur in nature.

Name the two sub-atomic particles in the nucleus of an aluminium atom.

Identify the true statement. Choose one: A. The expansion of ice sheets at the end of the Pleistocene caused glacial rebound in northern Canada. B. Regions covered by glacial ice are termed periglacial environments. C.

What is the concentration when 0.065 moles of NaNO3 are dissolved in enough water to make 150.0 mL of solution?