Why does stirring increase the speed of solute dissolving in water?
a) it decreases the surface area of the solute particles.
b) it makes the water molecules bump into solute more
c) it raises the pressure of water molecules
d) it significantly increases the temperture

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Find the mass in grams of 1.37x1020 particles of h3po4

Calculate the number of moles of ethane in 100 grams