10% solution means=
=
= 100 mg/mL
If the dentist inject 0.3 mL, that is equal to 0.3× 100 mg.
If the dentist inject 0.3 mL, that is equal to 30 mg.
So, as anesthetic procaine hydrochloride is often used to deaden pain during dental surgery. the compound is packaged as a 10.% solution (by mass; d = 1.0 g/ml) in water. When our dentist
injects 0.30 ml of the solution, 30 mg of procaine hydrochloride (in milligrams) is injected.
Answer:
Democritus came up with the idea that all matter is made up of tiny particles he called atomsis the answer to the third quistion,Bernoulli is the answer to the first quistion, and Priestley is the answer to the second quistion.
Explanation: