badasswithabow badasswithabow

12-11-2018
Chemistry

contestada

What is the empirical formula of a compound that contains 40 percent carbon, 6.7 percent hydrogen, and 53.3 percent oxygen by mass?

Respuesta :

jsoso102000 jsoso102000

21-11-2018

40.0 g C * 1 mol C/ 12.0 g C = 3.333 mol C

6.7 g H * 1 mol H/ 1.008 g H= 6.6 mol H

53.3 g O * 1 mol/ 16.0 g O= 3.331 mol O

divide by the least moles

3.333 mol C / 3.331 = 1

6.6 mol H/ 3.331 = 1.98 ~ 2

3.331 mol O/ 3.331 = 1

empirical formula is H2CO

Answer Link

Otras preguntas

What effect does a network externality have on the market for a product? if a network externality is present for a product, then a. consumers may be more like

Johanna often feels she is a helpless victim to other people's actions. her sister frequently decides her schedule dictates which events she will attend. for jo

The standard form of an exponential growth or decay equation is f(x) = a(b)^x What do each of the variables in this equation (a,b,x) represent?

How do you write 331 in scientific notation?

What is bias? Explain an example of bias you witnessed in the Concord City election.

Which of the following is a run-on sentence? A. The game will be called if the storm continues, the weather is dangerous. B. While the rain was dre

Find the side and measure B

Which form of business ownership generates the most sales in the united states?

Read each pair of statements. Complete the second statement of each pair with the correct subjunctive form of the underlined verb. Modelo Umberto nunca planea s

Which expression is equivalent to sqrt 120x? a. 2 sqrt 30x b. 2 sqrt 30 c. 4 sqrt 30x d. 60 sqrt 2x