Knowing an object's position requires which of the following? A. speed B. time C. displacement D. reference point

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)