What volume of gas (ml) would you expect to collect when 0.1848 grams of zinc are reacted with excess 6 M hydrochloric acid, at 25°C and 759.2 mmHg atmospheric pressure? The vapor pressure of water is 23.8 mmHg at that temperature R -0.08206 L-atm/mol, 1 atm - 760 mmHg

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these