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schepotkina [342]
3 years ago
11

Please Help Q 4.How many moles are there in 2.4 x 10 24 atoms of He?

Chemistry
2 answers:
liubo4ka [24]3 years ago
6 0
(2.4 x 10 24) divided by (6 x 10 23)=
a_sh-v [17]3 years ago
5 0

Answer: 4moles

Explanation:

1mole of He contain 6.02x10^23 atoms.

Xmol of He will contain 2.4 x 10^24 atoms i.e

Xmol of He = 2.4x10^24/6.02x10^23 = 4mol

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Hydrophobic molecules (like oil) tend to self-associate in water rather than dissolve. What is the MAJOR energetic contribution
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Answer: The MAJOR energetic contribution to this property is the self association that maximizes the entropy of the water molecules.

Explanation:

Hydrophobic molecules (like oil) tend to self-associate in water rather than dissolve in it. The MAJOR energetic contribution to this property is the self association of this oil which increases the degree of disorderliness of the water molecules.

4 0
2 years ago
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During an oil spill, oil coats the surface of the water, endangering sea life. Why doesn’t oil dissolve in ocean water
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Water forms a covalent bond and oil forms a noncovalent bond
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If oxygen at 128 kpa is allowed to expand at constant temp until it's pressure is 101.3 kpa how much larger will the volume beco
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which means that the volume increased by 26.4 mL in order to compensate for the decrease in pressure.

Like I said, depends on what your initial volume was, but that's how you think of it.

Hope this helped!

6 0
2 years ago
Baker’s yeast catalyzes the decomposition of hydrogen peroxide (dihydrogen dioxide) into oxygen and water. Directions: Add 10 mL
andreev551 [17]

Answer:

The unbalanced chemical equation: H₂O₂ → H₂O + O₂.

The balanced chemical equation: H₂O₂ → H₂O + 1/2O₂.

Explanation:

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  • It is can be catalyzed by using yeast.

The unbalanced chemical equation: H₂O₂ → H₂O + O₂.

The balanced chemical equation: H₂O₂ → H₂O + 1/2O₂.

1.0 mol of H₂O₂ is decomposed to 1.0 mol of H₂O and 0.5 mol of O₂.

3 0
3 years ago
Constance has an apple that weighs 85,000 milligrams and a peach that weighs 0.15 kilograms. which fruit has the greater mass? c
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The fruit which has the greater mass is peach i.e. 150 grams.

<h3>What is mass?</h3>

Mass is a quantity which is used to define that what amount of substance will occupy any space or present in the given object.

We have given,

Weight of apples = 85,000 mg

Weight of peach = 0.15 kg

To compare the quantity first we have to convert both of these units in the same unit, and we know that:

In 1 kilogram = 1000 grams

And in 1 grams = 1000 milligrams

So, we convert both the units into grams as:

85,000 mg =  85,000 / 1000 = 85 grams

0.15 kg = 150 grams

So, the mass of peach is high.

Hence, peach has the greater mass.

To know more about mass, visit the below link:

brainly.com/question/15526412

4 0
2 years ago
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