How many grams of testosterone, c19h28o2 (288.4 g/mol), must be dissolved in 299.0 grams of benzene to reduce the freezing point by 0.500°c ? refer to the table for the necessary boiling or freezing point constant.

solvent

formula

kb (°c/m)

kf (°c/m)

water

h2o

0.512

1.86

ethanol

ch3ch2oh

1.22

1.99

chloroform

chcl3

3.67

benzene

c6h6

2.53

5.12

diethyl ether

ch3ch2och2ch3

2.02

? g testosterone.

Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.