When 0.14 g of cholesterol is dissolved in 1.00 ml of ether and placed in a sample cell 10.0 cm in length, the observed rotation at 20°c (using the d line of sodium) is -0.441°. calculate the specific rotation of cholesterol.

Specific rotation of cholesterol is -3.15°.

Explanation:

Given that

Path length = 10 cm = 1 dm.

Observed rotation ,α= - 0.441 °

m= 0.14 g

V= 1 ml

The concentration of cholesterol ,c= m/V  g/ml

     c = 0.14 / 1 = 0.14 g/ml

We know that specific rotation given as

Now by putting the all values

°

Specific rotation of cholesterol is -3.15°.

quartz

explanation:

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.