Question

PLEASE HELP 100 POINTS! Use the rules of adding and multiplying significant figures to answer these questions.

A substance inside of test tube 1 has a measured mass of 2.25 g.
A substance inside test tube 2 has a measured mass of 2.2 g.

Test tube 1 and 2 are mixed (added) together. What is the new mass of liquid now combined?

Answer 1

4.45g

Step-by-step explanation:

just add the two together to get an answer