kataliya kataliya

25-01-2020
Chemistry

contestada

How many grams do 5 2x 10^20 atoms of silicon weigh? In the units of g.

Relax

Respuesta :

gbustamantegarcia054 gbustamantegarcia054

26-01-2020

Answer:

g silicon = 0.0243 g

Explanation:

1 mol ≡ 6.022 E23 atoms

∴ atoms silicon = 5.2 E20 atoms

⇒ n Silicon = (5.2 E20 atoms)×(mol/6.022 E23 atoms) = 8.635 E-4 mol silicon

∴ mm silicon = 28.086 g/mol

⇒ g silicon = (8.635 E-4 mol)×(28.086 g/mol) = 0.0243 g

Answer Link

Otras preguntas

Can someone help me in the problem above

Truth table problems. Please show all work, lots of reward points if you do it by tonight.

How would you compare 3.6 and the root of 12?

Which sentence has a pronoun that disagrees with its antecedent?

Which of the following caused an increase in temperature? Greenhouse gases Glacier advancement Flowers Rainfall Clouds Glass Panels

5y + 7 = 3y + 1 HELLLP

Solve for x -4 = -2/9 x

please help tap the picture there are two problem I'm stuck on

Daryl used a ruler to measure the distance between two cities on a map with a scale of 1 inch to 40 miles. He reported the actual distance between the two citie

A(n) _____ is generated by a Web server and then stored on your computer to keep track of the pages you view at a site, the merchandise you select, and other pr