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irakobra [83]
3 years ago
9

What do we know about a star if it has a lot of iron it’s core

Chemistry
1 answer:
Sergeu [11.5K]3 years ago
8 0
When a star is fusing iron in its core, it's still giving off insane amounts of energy. The helium, hydrogen, carbon, oxygen, and silicon are still there in the star in different shells. ... Iron cannot be fused into anything heavier because of the insane amounts of energy and force required to fuse iron atoms.
Hope this helps!
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Isopropanol major species present when dissolved in water
timofeeve [1]

Answer : Isopropanol molecules ( C₃H₈O) are the major species present when dissolved in water.

Explanation :

Compounds are of 2 types.

1) Ionic compounds : These are formed by the transfer of electrons from a metal to a non metal.

When ionic compounds are dissolved in water, they get separated into ions.

Therefore the major species present in case of an ionic compound are ions.

2) Molecular (Covalent) compounds: These are formed by sharing of electrons among 2 or more non metals.

Covalent compounds are further categorized as

a) Polar covalent : Polar covalent compounds partially dissociate to form ions.

Therefore the major species in case of polar covalent compounds are the undissociated molecules and ions.

b) Non polar covalent : Non polar covalent compounds are unable to dissociate and they remain in molecular form when dissolved. So the major species in case of a non polar compound are undissociated molecules only.

Isopropanol is a non polar covalent compound. As discussed above it will have undissociated isopropanol molecules as major species.

Hence Isopropanol molecules ( C₃H₈O) are the major species present when dissolved in water.


5 0
3 years ago
A beaker of 450g of water is heated from 4.0°C to 25.0°C on a hot plate. If the
motikmotik

Answer: 5.13

Explanation: juss do it

5 0
3 years ago
The lower the ignition temperature, better the fuel. True or false?Why?
Aleksandr [31]

Answer:

True

Explanation:

This means the fuel is highly flammable hence it has a low ignition temperature. This, therefore, means it burns fast without putting in a lot of energy to ignite it. Even in cars, therefore, the compression ratios, in engines using these of these fuels, is lesser.

3 0
4 years ago
A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is
Brilliant_brown [7]
But what is the width of the molecule
5 0
3 years ago
A ball is moving at a speed of 6.70 m/s. If the kinetic energy of the ball is 3.10 J, what is the mass of the ball?​
Anni [7]

Answer:

<h2>0.14 kg</h2>

Explanation:

The mass of the ball can be found by using the formula

m =  \frac{2k}{ {v}^{2} }  \\

v is the velocity

k is the kinetic energy

From the question we have

m =  \frac{2(3.10)}{ {6.70}^{2} }  =  \frac{6.20}{44.89}  \\  = 0.138115...

We have the final answer as

<h3>0.14 kg</h3>

Hope this helps you

7 0
3 years ago
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