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Dmitry_Shevchenko [17]
3 years ago
13

What is earths surface made of?

Chemistry
2 answers:
hram777 [196]3 years ago
8 0
Earths surface is made of rock
PIT_PIT [208]3 years ago
5 0
The rocky surface layer of Earth, called the crust, is made up of mostly oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium.
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What type of chemical reaction does this equation represent?<br> H3PO3—&gt;H3PO4 + PHz
Bogdan [553]
Decomposition I believe
6 0
3 years ago
For the reaction: C → D + B the graph of ln k vs 1/T(K) gives the equation: y = -2.2x104x + 45.0. Using this information, calcul
Dafna1 [17]

From the equation of the graph, the activation energy of the reaction is -2.2 * 10⁴ J/mol.

<h3>What is activation energy?</h3>

Activation energy is the minimum required energy that reactant molecules must possess for a reaction to proceed towards formation of products.

The activation energy is determined from the slope of ln k against 1/T(K).

Given the equation, y = -2.2 * 10⁴ x + 45.0.

Comparing with the equation of a straight line, y = mx + c

The gradient, m = -2.2 * 10⁴

Therefore, the activation energy of the reaction is -2.2 * 10⁴ J/mol.

In conclusion, reactant molecules must break the activation energy barrier in order to form products.

Learn more about activation energy at: brainly.com/question/26724488

#SPJ1

8 0
2 years ago
Which of the following is NOT a qualitative observation
frozen [14]

what is the following???

a qualitative observation is when somehthings appearance changes like form red to blue, and qualitative is when the umber of something changes.

Hope this helps

Kenny

4 0
3 years ago
Why don't the oceans simply reabsorb the water that evaporates?
Misha Larkins [42]
The water evaporates into the clouds
6 0
3 years ago
Please help I’m failing
denis-greek [22]

Answer:

C.

Explanation:

Solubility KClO3 at 45°C is around 15 g KClO3 in 100 g of water. We have

30 g that is more. So, solution is supersaturated.

3 0
3 years ago
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