Which of the following is the number of moles of solute that is dissolved in 1 liter of solution?

a. percent by mass

b. molarity

c. percent by volume

Which of these is always equal to the molar mass of any element? its atomic number its atomic weight its atomic formula its atomic structure

Mixing a cocktail is it a physical or chemical change

Suggest a reason for why the phosphorus-containing side product from the horner-emmons wittig reaction is more water-soluble than the triphenylphosphine oxide side product obtained from the standard wittig reaction.

A gas absorbs 10J of heat and is simulataneously comptessed by a constant external pressure of 0.5atm from 4L to2L in volume. What is change in the internal energyA. 101J B. 111J C. 2J D. None of the above

Which is the most active nonmetallic element in group 16?

Gases and liquids will both expand to fill their container. True False ... ?

Which of the following best explains why electrometallurgy is a useful process in many industries? A.) Electrometallurgy can etch permanent marks and designs into the surfaces of metal products. B.

Your TLC results for ortho-hydroxyacetophenone versus para-hydroxyacteophenone will indicate that one compound is significantly less polar than the other.

A box contains equal amounts of helium, argon, and krypton (all gases) at 25 ∘c. part a consider the temperatures, masses, average velocities, and average kinetic energy of the three kinds of gas in the mixture.

Why are coastal zones productive?