mikaelakaczyns
mikaelakaczyns mikaelakaczyns
  • 18-09-2016
  • Chemistry
contestada

How many atoms are in 187 g of Calcium?

Respuesta :

Willchemistry
Willchemistry Willchemistry
  • 18-09-2016
Atomic mass Calcium ( Ca) = 40.078 u.m.a

40.078 g --------------- 6.02x10²³ atoms
187 g ------------------- ??

187 x ( 6.02x10²³) / 40.078 =

1.125x10²⁶ / 40.078 = 2.808x10²⁴ atoms

hope this helps!




Answer Link

Otras preguntas

This popular political pamphlet is considered the origins of the communist system of government.  AnswerCapitalCommunist ManifestoWealth of Nationsnone of the a
Janet earns $300 per week plus a commission of 10% on all sales that she makes. Write a formula for E, Janet’s weekly earnings, in terms of s, her sales for the
What happened between Catherine Thompson Hogarth and Charles Dickens in 1858 and why?
[tex]a 1 over 2 (a +b) h for a [/tex]
What is the scientific notation of 1,394,000,000
how long did the battle of stamford bridge last
explain why x and 4x -10 are factors of the expression x(4x-10)^ rather than terms of the expression . what are the terms of the factor 4x-10?
Subtract 538 To 379 . What Is Your Answer ?538-379
Multiply and simplify 36*5/4
John currently has enough money to buy 45 books. If each book cost 10 cents less, John could buy 5 more books. How much money does John have to spend on book? (