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Yakvenalex [24]
3 years ago
11

What would happen if the earths core cooled

Chemistry
1 answer:
maria [59]3 years ago
6 0

Answer:

Shutterstock

Explanation:

when the molten outer core cools and become solid ,a very long time in future,the earth's magnetic field will disappear

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Famous New Zealand scientist Ernest Rutherford was awarded a Nobel Prize in which field?
Gnom [1K]
The  field of Chemistry. 
4 0
3 years ago
1 Calcium carbonate breaks down on heating to produce calcium oxide and carbon dioxide gas.
Alborosie

Answer:  See below

Explanation:

1.  a)  0.15 moles calcium carbonate  (15g/100g/mole)

   b)  0.15 moles CaO  (molar ratio of CaO to CaCO3 is 1:1)

   c)   8.4 grams CaO  (0.15 moles)*(56 grams/mole)

2. a)  0.274 moles Na2O  (17g/62 grams/mole)

   b)  46.6 grams NaNO3  (2 moles NaNO3/1 mole Na2O)*(0.274 moles Na2O)*(85 g/mole NaNO3)

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3 years ago
Which of the following elements has two valence electrons?
lara31 [8.8K]
Beryllium, Magnesium, Calcium....etc have two valence electrons
5 0
3 years ago
What do scientists use to increase the surface area of a solute
marta [7]

use a mortar & pestle to grind the solute into smaller particles, thus increasing the surface area.


6 0
3 years ago
Read 2 more answers
Multiply or divide to find the equivalent fraction.<br><br> 51/120=□/360
jok3333 [9.3K]

Answer

153

Explanation:

51/120 = x/360

51(360) = 120x

18360 = 120x

18360/120x = 120x/120x

153 = x

5 0
3 years ago
Read 2 more answers
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