Answer:
The pressure increases by a factor 8
Explanation:
For a gas held at constant temperature, Boyle's law can be applied. It states that the product of the gas pressure and the gas volume is constant, so we can write:

where
is the initial pressure
is the final pressure
is the initial volume
is the final volume
For the gas in this problem, the volume is reduced from

to

so we can rewrite the equation as

this means that the pressure of the gas will increase by a factor 8.
The atomic mass is roughly equal to the sum of protons and neutrons of an atom.
9 protons + 10 neutrons = 19
Atomic mass of Flourine is 19.
Answer:
they share electrons between them.
Explanation:
taking the test rn lol i think its right
As blood leaves the heart and is oxygen-rich, it is bright red. When the blood returns to the heart, it has less oxygen. It is still red but will be darker. This darker red appears blue because of how light travels through the skin.
Hope This Helps!
Answer:
4. since they are based on natural ecosystems have often resulted in alteration and destruction of natural systems
Explanation:
this is because agriculture leads to loss of habitats, loss of nutrients from the soil, it has also lead to the use of chemicals which are harmful to the environment as pesticides, and all this destroys natural systems