Aformer high school teacher was discovered making meth, and the dea recently analyzed some confiscated material from a drug bust he was associated with. they found a compound with the empirical formula c17h14o7 that has a molar mass of 990.87 g/mol. what is the value of n (the multiplier) necessary to find the molecular formula?

3 is the value of n necessary to find the molecular formula.

Explanation:

The equation used to calculate the valency is :

We are given:

Mass of molecular formula = 990.87 g/mol

Mass of empirical formula of :

Putting values in above equation, we get:

3 is the value of n necessary to find the molecular formula.

The molecular formula is :

the answer is learned

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.