The molar mass of a compound X(HCO3)2 is 146. The atomic weight ...

[go.lag]

The molar mass of a compound X(HCO3)2 is 146. The atomic weight of X when rounded to the nearest whole number is ________, which is ________.
 
  A) 24; Mg
  B) 40; Ca
  C) 51; V
  D) 56; Fe

Question 2

The molar mass of a compound XClO3 is 106.5. The molar mass (rounded to the nearest whole number) of X is ________, which is ________.
 
  A) 39; K
  B) 23; Na
  C) 7; Li
  D) 1; H

[mirabriestensky]

Answer to Question 1

A

Answer to Question 2

B