saltenhofen91 saltenhofen91

04-05-2017
Chemistry

contestada

how many moles of Cu in 7.81 * 10^21 atoms of Cu

Respuesta :

JavierCollante JavierCollante

04-05-2017

Use avogadro's number---> 6.02 x 10^23 atoms= 1 mol

7.81 x 10^21 (1 mole/ 6.02 x 10^23)= 0.0130 moles of Cu

Answer Link

Otras preguntas

Earth is a close approximation of a natural closed system. What are some ways that living in a closed system affects each of us.

Find the length of the radius of the following circle. (x + 2)2 + y2 = 10

Hello, I need help please for mission 3 thank you very much.

where will you find maximum rate of evaporation - ocean, pond or an aquarium? Give reason to support your answer.

Guess the mystery number.The number is greater then 10 and less then 18. The number is the sum of two identical odd numbers. What is the number? Show how you fo

List all the commonwealth games mascots from 1982-2014

the graph below shows the distribution of students grades on their last math test. Based on the Empirical rule, what percent of students made.. *btwn 80 n 85 o

Convert the general form of the circle given into standard form. 2x^2 + 2y^2 - 20x - 8y + 50 = 0

A movie starts at 7:00 pm and lasts 108 minutes. What time does the movie end?

Guess the mystery number.The number is greater then 10 and less then 18. The number is the sum of two identical odd numbers. What is the number? Show how you fo