Using the molarity equation, calculate how many grams of salt you need in order to make 80ml of a 2m solution (mw = 58.44g/mole)?

9.35g

Explanation:

The molarity equation establishes that:

So, we have information about molarity (2M) and volume (80 ml=0.08 l), with that, we can find the moles of solute:

The  mathematical equation that establishes the relationship between molar weight, mass and moles is:

We have MW (58.44g/mole) and n (0.16 mol), and we need to find m (grams of salt needed) to solve the problem:

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.