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antiseptic1488 [7]
2 years ago
13

What are 5 most abundant elements in the Earth's crust​

Chemistry
2 answers:
allochka39001 [22]2 years ago
4 0

Explanation:

Element Abundance percent by weight Abundance parts per million by weight

Oxygen 46.1% 461,000

Silicon 28.2% 282,000

Aluminum 8.23% 82,300

Iron 5.63% 56,300

Mkey [24]2 years ago
3 0
Oxygen,silicon,aluminum, and iron
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If 10 g of NaOH is diluted to 500 ml with water then  the concentration expressed in percent is 0.5 mol/L .

Calculation ,

Given mass in gram = 10 g

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Putting the value of mass and volume in equation i we get concentration expressed in percent .

C = number of moles ×100/ volume in liter = 0.25mole ×100/ 0.5 L

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Concentration of solution in terms of percentage can be expressed in two ways

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