What is the mass percent of ethylene glycol in a 2.45 m solution of the ethylene glycol in water, the density of the solution is 1.07?

The mass percent of ethylene glycol in solution is 14.2 %

Explanation:

We are given:

Molarity of ethylene glycol solution = 2.45 M

This means that 2.45 moles of ethylene glycol is present in 1 L or 1000 mL of solution.

Density of solution = 1.07 g/mL

Volume of solution = 1000 mL

Putting values in above equation, we get:

Moles of ethylene glycol = 2.45 moles

Molar mass of ethylene glycol = 62 g/mol

Putting values in above equation, we get:

Mass of solution = 1070 g

Mass of ethylene glycol = 151.9 g

Putting values in above equation, we get:

Hence, the mass percent of ethylene glycol in solution is 14.2 %

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)