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Alika [10]
3 years ago
11

Why is the moon visible?

Chemistry
2 answers:
katrin2010 [14]3 years ago
7 0
It is C. because the sunlight bounces off the moon causing it to be visible only at night.
dolphi86 [110]3 years ago
6 0

C. it reflects sunlight

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Based on the structural formulas above, which of the following identifies the compound that is more soluble in water and best he
Pachacha [2.7K]
A is the correct answer I’m glad I could help out
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3 years ago
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Select all of the items that are true about a sample of water vapor at 101°C as it cools.
zloy xaker [14]

Answer:

D. Its temperature will remain 100 C until all the vapours condenses

Explanation:

Heat absorbed by a substance to change the state of matter is known as latent heat. This heat is utilized to break the bonds between atoms of the substance so that they can undergo phase change.

So, when water boils at 100 degree Celsius then temperature will remain constant unless and until all the water changes into vapor. As it is the latent heat that breaks the bonds between hydrogen and oxygen atoms of water so that liquid state can change into gaseous state.

Since latent heat is a hidden heat, that is why, it does not get reflected and there is no change in temperature due to it.

Thus, we can conclude that it is true that temperature will remain at 100°C until all the vapor condenses for a sample of water vapor at 101°C as it cools.

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3 years ago
How many neutrons are in the isotope carbon-14?
Reika [66]
The correct answer is  a 6
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How can you efficiently determine the number of atoms in a sample of an element?
nata0808 [166]

Answer:

b. First determine the mass of the sample and then convert it to the number of atoms using Avogadro's number and the molar mass of the element.

Explanation:

a. First determine the mass of the sample and then convert it to the number of atoms using the molar mass of the element.  <em>FALSE. </em>As the mass is in grams and molar mass is in g/mol. This result in the moles of each element, not its number of atoms.

b. First determine the mass of the sample and then convert it to the number of atoms using Avogadro's number and the molar mass of the element.  <em>TRUE. </em>Mass and molar mass will result in moles of element. These moles could be converted in number of atoms using Avogadro's number that is in # atoms per mole.

c.Use atomic microscope to determine Avogadro's number, then determine the mass of the sample and convert it to the number of atoms.  <em>FALSE. </em>An atomic microscope is not used to determine Avogadro's number.

d.Use atomic microscope to count each atom. <em>FALSE. </em>There is not possible to count every single atom in an element. There are more atoms in a drop of water than stars in the sky.

I hope it helps!

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3 years ago
How many milligrams are in 0.2 decigrams?
marshall27 [118]

There are 20 milligrams in 0.2 decigrams

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