saltenhofen91 saltenhofen91
  • 04-05-2017
  • Chemistry
contestada

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

Respuesta :

JavierCollante
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

Dan is 4 times as old as Tim. 8 years from now the sum of their ages will be 71. How old are they now
What were some specifics from the Chinese Exclusions Act? prohibited Chinese immigrants unless they were skilled workers prohibited new Chinese immigrants enter
the cost of 3 bottles of apple spread is $7.41. what is the cost of each bottle of apple spread? $1.62 $2.47 $4.41 $10.41
which of the following cannot be considered a single phase? a) a pure solid b) a pure liquid c) a homogeneous mixture d) a heterogeneous mixture
How are evaporation and sublimation similar?
what is a hemisphere?
what is not a not a hypothesis?
whats 0.5 percent ($140,000)
simple subject of the sentence, She went on a trip to Florida last summer
define bicameral. a) two governments b) two leaders c) two powers d) two houses