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qwelly [4]
3 years ago
9

Use what you have learned to match the parts of the

Chemistry
1 answer:
andre [41]3 years ago
6 0

Answer:

the crust is the outermost layer

Explanation:

the mantle is under the crust, the core is the innermost layer

land and water.is for crust-mantle. contain semi-molten iron and nickel please make the question clear

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HELP ME please i need help with this
nadezda [96]
4)
a) Natural selection will work negatively against rabbits that only eat berries as the drought is preventing berries from growing. It wont have any negative impact on rabbits that only eat grass as the grass is still surviving.

b) The statement ‘population has variations’ is backed up by the fact that the rabbits eat different things. They aren’t all the same. The statement ‘some variations are favorable’ is backed up by the fact that the rabbits that only eat grass are able to survive the drought. Their variation in eating grass instead of berries let’s them live. The statement ‘a population will change over time’ is backed up by the fact that the rabbits that only eat berries will die out. This will not only change the size of the population but going forward will create a population that has more rabbits that eat only grass on account of natural selection.
7 0
3 years ago
What is the numerical value for Q for this reaction? Remember to always express your answer to correct number of significant fig
ioda

The reaction is not at equilibrium because Q >P hence the reaction moves towards the left hand side.

<h3>What is the equilibrium constant?</h3>

The equilibrium constant is a figure that tells us the extent to which the reactants have been converted to products in a reaction.

Now we have the reaction; PCl3(g) + Cl2(g) ⇄ PCl5(g) hence we can write;

Q = [PCl5]/[PCl3] [Cl2]

Q = 0.39/0.21 * 0.41

Q = 4.5

The reaction is not at equilibrium because Q >P hence the reaction moves towards the left hand side.

Learn more about equilibrium constant:brainly.com/question/10038290

#SPJ1

3 0
2 years ago
Why aren't hydrogen fuel cells currently available to the public​
Romashka-Z-Leto [24]

Answer:

they require more testing in real-word conditions

Explanation:

One of the biggest reasons for this very slow uptake of hydrogen vehicles is the existing infrastructure. ... The sceptics' first argument against hydrogen vehicles is that they're less efficient than EVs are. Because hydrogen doesn't occur naturally, it has to be extracted, then compressed in fuel tanks.

8 0
3 years ago
Cho một thực phẩm có độ ẩm tương đối là 81%, hỏi hoạt độ của nước của thực phẩm đó là bao nhiêu?
spayn [35]

Explanation:

Given a food with a relative humidity of 81%, what is the water activity of that food?

The water activity of a food can be determined by using the formula:

water activity=relative humidity of food / 100

water activity of a food=\frac{relative humidity of food }{100} \\=81/100\\=0.81

6 0
3 years ago
Why does ch3ch2ch2cl have a lower boiling point than ch3ch2ch2oh?
Damm [24]
Perhaps because of the chlorine atom
3 0
3 years ago
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