alexia28 alexia28

02-09-2016
Chemistry

contestada

A compound contains 75% carbon and 25% hydrogen by mass. What is the empirical formula for this compound?

Respuesta :

Willchemistry Willchemistry

02-09-2016

75% Carbon
25% hydrogen

molar mass C and H is:

12.0 g/ mol
1.0 g/mol

number of moles:

C = 75 / 12 => 6.25 moles
H = 25 / 1 => 25 moles

C = 6.25 / 6.25 => 1
H = 25 /6.25 => 4

the empirical formula is: CH₄

hope this helps!

Answer Link

Otras preguntas

Find the area of a circle with radius of 4 m use the value 314 for pi

Solve for the value of x. (3x+3) (2x-8)

How many congrees members

The amount of lactic acid in the blood was measured in subjects after various amounts of time running. How does the respiration of the person change throughout

If a rectangle is 10 units wide and x units long what is the perimeter of this rectangle?

Expand and simplity 4(2x - 1)3(2x 5) Pleaseee helpppp

Find the equation of the graph given below. Notice that the sine function is used in the answer template., representing a sine function that is shifted and/or r

How do consumer credit counseling services help individuals with excessive debt? They assist in selling all assets in exchange for debt eliminations. They len

What is the measure of

4x-2/6 = 5/3anyone got a clue ?