Combustion analysis of an unknown compound provides the following data: 73.5 grams c, 4.20 grams h, and 72.3 grams cl. what is the percent composition of each element in this compound?

Cl = 49.0%, H = 2.8% and Cl = 48.2%

Explanation: Masses of C, H and Cl elements are given and the question asks to calculate the percent composition of each element in the compound.

The formula used for percent composition that is mass percentage is:

mass percent of an element =

Given:

mass of C = 73.5 grams

mass of H = 4.20 grams

mass of Cl = 72.3 grams

Mass of compound = 73.5 grams + 4.20 grams + 72.3 grams = 150 grams

percent composition of C =  = 49.0%

percent composition of H =  = 2.8%

percent composition of Cl =  = 48.2%

So, the compound has 49.0% C, 2.8% H and 48.2% Cl.

passed in september 1935, these laws are known as nuremberg laws.   they forbid jews from marrying but not directly forced them to divorce aryans. what is most noticeable is the fact that the jews were defranchised, meaning by this that they were not expected to have any civil rights, including the right to vote. the right answer is deprived of the right to vote.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.