A volume of 5.00 ml of mercury is added to a beaker that has a mass of 87.3 g. What is the mass of the beaker with the added mercury?

Question

Its chemistry math basically. Im not good at it all. Thats why Im on this site. I need help

Answer 1

Mikala, There are several ways to solve this equation.

 

ml and g are not the same measures so you have to choose to express the weights or masses in common terminology.

 

Now, a cm³ is about the same size as a ml. So, I would convert 5.00 ml of mercury to density. A quick web search would show Hg (mercury) is about 13.534 g/cm³ or about 13.534 g / ml. So, 5.00 x 13.534 = ? g

 

Now, Take that answer and add to 87.3 g beaker

 

5.00 ml x 13.534 g/ml = 67.7 g

 

Add Beaker weight of 87.3

 

67.7 + 87.3 = 155 g 

 

Original equation would look like

 

(5.00 ml x 13.534 g/ml) + 87.7

67.7 + 87.3=155