An experiment requires you to use 2.95 x 1023 formula units of sodium phosphide. In order to obtain the correct amount of sodium phosphide, you need to determine the mass, in grams. Which correctly represents the mass in grams of the sodium phosphide?
65.3 g of sodium phosphide
18.6 g of sodium phosphide
49.0 g of sodium phosphide
25.4 g of sodium phosphide

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

What can be found in the ionosphere

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.