I need step by step answers finding the the molecular mass of 2 unknowns using vant Hoff of 1 for organic compound( FP1) and vant Hoff 2 for ionic...

I need step by step answers finding the the molecular mass of 2 unknowns using vant Hoff of 1 for organic compound( FP1) and vant Hoff 2 for ionic compound (FP2) for chem lab. Need to know what the unknown FP1 and FP2 are.

h20-

initial mass test tube 27.400g

initial volume test tube 0.00 mL

mass of water 37.400g

volume water 10mL

freezing point 0.0C

HP1-

initial mass 27.400g

initial volume 0.00mL

mass fp1 29.400g

volume fp1 1.3 mL

total mass (2g FP1+10 ml water) 39.400g

total volume (2g FP1+10 ml water ) 11.3mL

freezing point -2.1

HP2-

initial mass 27.400g

initial volume 0.00mL

mass fp2 29.400g

volume fp2 1.2 mL

total mass (2g fp2+10ml water) 39.400g

total volume (2g+10ml water) 11.2mL

freezing point -3.8