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Vadim26 [7]
2 years ago
12

Earth's core is made mostly of

Chemistry
2 answers:
Natalka [10]2 years ago
6 0

Answer:

iron and nickel

Explanation:

Deep inside the Earth's core, near the center is iron and nickel.

xxMikexx [17]2 years ago
4 0

Answer:

iron and nickel.

Explanation:

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How much ch2o is needed to prepare 445 ml of a 2.65 m solution of ch2o?
worty [1.4K]

Answer: 35.4 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

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Putting in the values we get:

2.65=\frac{n\times 1000}{445ml}

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Thus 35.4 grams of CH_2O is needed to prepare 445 ml of a 2.65 m solution of CH_2O.

8 0
2 years ago
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Potassium is not found  free in nature but is found in the form of potash. Potash is the ore of potassium and this ore is mined from deep down the earth or can sometimes  be found on the surface. Potash was mostly formed as sea water receded and left deposits.

Potash is usually in the form of potassium salts such potassium chloride and  potassium sulphate.  The potash  is mined then taken to the factory where it is crushed and purified  by removing such impurities as clay.

The now purified potassium salts are subjected to a process called electrolysis where  potassium metal is obtained from its salt. 

5 0
3 years ago
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