Answer:Eat a light dinner and avoid foods that trigger your heartburn. Don't lie down for at least 2 to 3 hours after you eat. Use blocks or books to raise the head of your bed by 4-6 inches. Or put a foam wedge under your mattress at the head of the bed.
Explanation:
The answer is "A. a pure substance can be separated by chemical means, while a mixture can be separated by physical means". A pure substance only has one type of substance, whereas a mixture has more than one. A pure substance therefore, can only be separated chemically, because it is not two things mixed together, whereas a mixture can be separated physically because there are multiple substances.
O = C = O Straight because there is no solitary electrons on C
No ionic bond is between metal and non metal and covalent bond is between two non metals
