What is the mass of 0.75 mol of hydrogen sulfide

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

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand