Achildren's liquid medicine contains 100mg of active ingredient in 5 ml. if a child should receive 200 mg of the active ingredient how many ml of the medicine she's a child be given for the purpose of this question assume that these numbers are in fact

10ml
In this question, you are given the liquid medicine concentration (100mg/5ml) and the doses of the medicine that must be taken(200mg). You are asked how much ml of the drug needed. Then the calculation would be:

Volume of drug needed= doses of the drug / drug concentration
Volume of drug needed= 200mg / (100mg/5ml)= 10ml

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other