Concentrated (stock) hydrochloric acid (12 M) solution is purchased from a chemical supply company. You must make up 500. mL of 0.200 M HCl solution for your lab. How many mL of the stock HCl will you need?

Why is the vapor pressure of a warm lake higher than the vapor pressure of a cold lake? o a. warm water has a greater heat of vaporization. ob. warm water evaporates more quickly. cool water evaporates more quickly. od. cool water has a greater heat of vaporization.

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: