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skelet666 [1.2K]
3 years ago
5

The Layers of the Earth video compared the layers of the earth with what type of

Chemistry
1 answer:
garik1379 [7]3 years ago
3 0

Answer: coconut

Explanation:

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How many moles of aluminum are needed to make 9 moles of molecular hydrogen? given the reaction: 2 al + 6 hcl → 2 alcl3 + 3h2 6
sergiy2304 [10]
1) Chemical equation

2Al + 6 HCl ---> 2Al Cl3 + 3 H2

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2 mol Al : 3 moles H2

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2 mol Al /  3mol H2 = x / 9 mol H2

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A solution is prepared by adding 1.43 mol of kcl to 889 g of water. the concentration of kcl is ________ molal. a solution is pr
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A solution is prepared by adding 1.43 mol of potassium chloride (kcl) to 889 g of water. The concentration of kcl is 1.61  molal.
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the formula for calculating molality is:
molality = moles of solute/kilograms of solvent
1kg = 1000g so, 889g = 0.889kg

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Answer:

sodium appears as a silvery soft metal that becomes grayish white upon exposure to air

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