Use dhe references to access inportaat valbes ifneeded for ais a sample of 2.601 grams of a compound containing carbon and hydrogen reacts with oxygen at elevated temperatures to yield 8.793 grams of co2 and 1.800 grams of h2o. (a) calculate the masses of c and h in the sample grams: c- h- (b) does the compound contain any other elements? (e) what are the mass percentages of c and h in the compound? mass percentages: c % ; h-| (d) what is the empirical formula of the compound? esler the elements in the order presested in the question empirical formula-

petroleum? coal maybe?

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.

i think is conclusions.i think so