1. Cyclohexane has a freezing point of 279.65 K. A solution of 29.5 g
of a solute in 1,000 g of cyclohexane has a freezing point of
277.33 K. What is the molar mass of the solute? (Kf 20.2 K/m)
a 255.15 g/mol
b 256.15 kg/mol
c 255.85 g/mol
d 256.85 g/mol

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product

Can someone me with 1 to 4 plz. fast