The answer is HB!
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Answer: 0.8242182 quarts of blood will be present in the brain at rest.
Solution:
According to question: 15% by volume of blood your brain gets at rest
if we are having 5.2 L of blood in our body , then blood present in our brain at rest:

if 1 L= 1.05669 quart
Then 0.78 L will be =0.78 L
1.05669 quart = 0.8242182 quarts
0.8242182 quarts of blood will be present in the brain at rest.
The answer is C. Compressing the air reduces the volume and increases the pressure. Compressing the air causes the molecules to collide with one another, and with the walls of the container, at a higher frequency. This is becaue the number of molecules are still the same but now forced in a smaller volume of space. This why the pressure increases wiht reduced volume, while keeping the temperatures constant.
Answer:
1. 2+ (
).
2. 0 (
).
Explanation:
Hello,
In this case, the described chemical reaction is a redox reaction in fact, since the oxidation states of both magnesium and copper change as shown due to the displacement:

Therefore:
1. Since copper is the cation in the copper (II) nitrate, the (II) means that its charge is 2+ (
).
2. Since copper is alone, it means no electrons are being neither shared not given, its charge is 0 (
).
Best regards.
C. Speed is how fast, velocity has direction and acceleration is a change in velocity.