One milligram of a compound of molecular weight 160 is dissolved in 10 ml of ethanol, and the solution is poured into a 1-cm uv cell. the uv spectrum is taken, and there is an absorption at = 247 nm. the maximum absorbance at 247 nm is 0.50. calculate the value of for this absorption.

The value of molar absorptivity of the compound is .

Explanation:

Using Beer-Lambert's law :

A = absorbance of solution

C = concentration of solution =

l = path length = 1.00 cm

= molar absorptivity coefficient

Moles of compound =

Volume of the solution = 10 mL = 0.010 L

A = 0.50 , l = 1 cm

The value of molar absorptivity of the compound is .

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

answer: i would say b.

explanation: