A compound is found to contain 59.94% carbon 13.44% hydrogen and 26.62% oxygen by mass

C3H8O

Explanation:

These are the steps:

1. Write the given value for each element.

2. divide them by their Ar.

3. Divide the result by the smallest value in the ratio.

C H O 59.94% 13.44% 26.62% 59.94÷12 13.44÷1 26.62÷16

4.995 13.44 1.664

(4.995÷ 1.664) (13.44÷ 1.664) (1.664÷1.664)

3.00 8.07 1

3 : 8 : 1

So the compound is C3H8O.

m=9

step-by-step explanation:

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.