D.) There are 24 atoms in total in that compound.....
Answer:
The correct answer would be - c. A solid was added to water and the mixture was stirred until the solid was no longer visible
Explanation:
Photostabalizing is the process where a solid change its color in the presence of ultraviolet light, it is a chemical change, so the first option would not be the correct answer.
when two liquid or aqueous solutions are mixed together and form a solid substance, this reaction is known as precipitation and it is a chemical reaction too.
When a solid is placed in a liquid and after stirring it makes the solid vanish is a physical change known as dissolving character.
Thus, the correct answer is option C.
Answer:
18.75 milligrams of active ingredient is the recommended dose for a child weighing 36–47 lbs .
Explanation:
Recommended dose of an antihistamine for a child weighing 36–47 lbs = 1.50 tsp
1 table spoon of antihistamine has 12.5 mg per 5 mL of dose.
Amount of dose in 1 teaspoon =
Volume of 1 tsp = 5 ml
Volume of 1.50 teaspoon =
Amount of antihistamine in 7.50 mL :
18.75 milligrams of active ingredient is the recommended dose for a child weighing 36–47 lbs .
Answer:elementary substance
Explanation: