How many kL does a 1.25 108 cL sample contain? A) 1.25 103 ...

[leo leo]

How many kL does a 1.25  108 cL sample contain?
 
  A) 1.25  103 kL
  B) 1.25  1013 kL
  C) 1.25  104 kL
  D) 1.25  1012 kL
  E) 1.25  102 kL

Question 2

How many millimoles of Ca(NO3)2 contain 4.78  1022 formula units of Ca(NO3)2? The molar mass of Ca(NO3)2 is 164.10 g/mol.
 
  A) 12.6 mmol Ca(NO3)2
  B) 13.0 mmol Ca(NO3)2
  C) 20.7 mmol Ca(NO3)2
  D) 79.4 mmol Ca(NO3)2
  E) 57.0 mmol Ca(NO3)2

[lkanara2]

Answer to Question 1

A

Answer to Question 2

D

[leo leo]

TYSM

[miss.ashley]

Gracias!