10. A laboratory experiment requires that exactly 3 mL of chemical be dispensed into a
test tube. Which piece of equipment would be
MOST appropriate for measuring and
dispensing the chemical?
A another test tube
B a pipette
C a beaker
D a scale balance

B) a pipette

Explanation:

Also known as a graduated pipette, they vary in volume, with most measuring between 0 and 25.0 mL. A small pipette can be used for precise measurement of fluids.

the solar system used to have much dust particles option no d

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.