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Citrus2011 [14]
3 years ago
14

Potassium chloride will dissolve in water but not in oil. Why?

Chemistry
1 answer:
german3 years ago
8 0

Answer:

oil has a lighter liquid weight and is able to keep other chemicals or videmins from dissolving

Explanation:

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What is the percentage of water in the hydrate cocl2 • 6h2o
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Answer:

52.17%

Explanation:

COCl2.6H20

C=12,O=16,Cl=35.5,H=1

Relative molecular mass of COCl2.6H2O= 12+16+71+6(2+16) = 99 + 108= 207g

Relative molecular mass of 6H2O = 108g

Percentage of water = (108/207 )*100

= 52.17%

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3 years ago
Halppp can anyone come up with a slogan for anti smoking
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3 years ago
You have been working to develop a new fictitious compound in the lab. Determine the amount in units of moles​ [mol] of 20 grams
vodomira [7]

From the chemical formula the total mass of the compound can be determined. The mass of the 1 mole of the compound is its molar mass. The atom by which the molecule is generated, the mass of these atoms are expressed in terms of amu or atomic unit mass, but after formation of a molecule in a particular ratio the mass of each of the atom becomes the total molecular weight of the generated molecule. In this case the molecule posses three atoms X, Y and Z which are in a ratio of 2:2:7. Thus the chemical formula of the compound can be written as X_{2}Y_{2}Z_{7}.

So the total mass of the compound in amu is {(2×47)+(2×42)+(7×16)} = {94+84+112}=290 amu.

Thus 1 mole of the compound contains 290 amu or 290 g  by mass.

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3 years ago
Deforestation, intensive agriculture, and drought can result in a condition called
vredina [299]

Answer:

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Human activities that contribute to desertification include the expansion and intensive use of agricultural lands, poor irrigation practices, deforestation, and overgrazing. ... Some meteorologists and soil scientists measure the impacts and length of a drought to determine if it is an example of desertification.

8 0
2 years ago
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