What is the molality of a solution consisting of 4.45 ml of carbon tetrachloride (ccl4; d = 1.59 g/ml) in 85.1 ml of methylene chloride (ch2cl2; d = 1.33 g/ml)?

0.44 mol/kg

Explanation:

Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.

where,

n = moles of solute

= weight of solvent in g

Mass of solute

moles of solute =

Mass of solvent

Molality =

Thus molality of solution will be 0.44 mol/kg.

chemical properties are the characteristic of matter which can only be observed by changing the chemical identity of a sample like flammability reactivity and toxicity.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).