Given the densities of the following pure liquids, what volume of each is necessary to make 250 ml of a 350 mm solution? a. ethanol - 0.789 g/cm? b. acetone -0.791 g/cm c. formic acid - 1.220 g/cm3 d. tert-butylamine - 0.696 g/cm?

Answer :

(a) The volume of ethanol liquid needed are, 2.4 L

(b) The volume of ethanol liquid needed are, 1.9 L

(c) The volume of ethanol liquid needed are, 1.6 L

(d) The volume of ethanol liquid needed are, 1.7 L

Explanation : Given,

Volume of solution = 250 mL = 0.250 L   (1 l = 1000 mL)

Concentration of solution = 350 mM = 0.350 M    (1 mM = 0.001 M)

First we have to calculate the moles of solution.

(a)  For ethanol liquid :

To we have to calculate the mass of ethanol.

Now we have to calculate the volume of ethanol.

(b) For acetone liquid :

To we have to calculate the mass of acetone.

Now we have to calculate the volume of acetone.

(c) For formic acid liquid :

To we have to calculate the mass of formic acid.

Now we have to calculate the volume of formic acid.

(d) For tert-Butylamine liquid :

To we have to calculate the mass of tert-Butylamine.

Now we have to calculate the volume of tert-Butylamine.

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.