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Zina [86]
3 years ago
10

Someone please help me with this

Chemistry
1 answer:
igor_vitrenko [27]3 years ago
7 0

Answer:

I think A should be the answer because oxygen is the chemical change of carbon.

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The first ionization energy of mg is 735 kj/mol. calculate zeff.
Novay_Z [31]
2.25 I believe

Hope this helped!
STSN
7 0
3 years ago
What is the predicted outcome for very low mass stars (those that are smaller than about the mass of the sun)?
White raven [17]

Answer:

In case of low-mass stars,the outer layers of the low mass stars are expelled  as the core collapses such that the outer layers form a planetary nebula.

Explanation:

In case of low-mass stars,the outer layers of the low mass stars are expelled  as the core collapses such that the outer layers form a planetary nebula. The core remains as a white dwarf and finally become a black dwarf as it cools down. A low mass star consumes its core hydrogen and turns it into helium over its lifetime.

4 0
3 years ago
Help me with this please I need the answers ASAP
Tema [17]

Answer:

1. Exothermic reaction

2. Is being released

3. The energy comes from the change in energy between reactants and products

Explanation:

The reaction is producing energy. A reaction that produce energy is called a <em>Exothermic reaction.</em>

<em />

As the energy is produced, the energy is being <em>released.</em>

<em />

As you can see in the image, the energy of the reactants is higher than the energy of the products. This change of energy in the chemicals produce the production of energy as heat.

7 0
3 years ago
3. Is the following statement a fact, opinion or theory? Why?
Nesterboy [21]
This is an opinion. The person believes that eggs are better than cereal for breakfast. When someone else might disagree with that and say that cereal is better then eggs for breakfast.
7 0
3 years ago
(ii) When shale gas is burned, the hydrogen sulfide reacts with oxygen.
Elenna [48]

Answer:

See explanation

Explanation:

Now , we have the equation of the reaction as;

2H2S(g) + 302(g)------->2SO2(g) + 2H2O(g)

This equation shows that SO2 gas is produced in the process. Let us recall that this same SO2 gas is the anhydride of H2SO4. This means that it can dissolve in water to form H2SO4

So, when SO2 dissolve in rain droplets, then H2SO4 is formed thereby lowering the pH of rain water. This is acid rain.

4 0
3 years ago
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