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Maslowich
2 years ago
14

You have an object with a mass of 14 g and a volume of 20 mL. Calculate the density and identify which material you have from th

e list.
Chemistry
1 answer:
arsen [322]2 years ago
8 0

Answer:

0.7 g/ml. Whichever material matches that closest is the right one.

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30 Points! What is the difference between an atom and an ion
ValentinkaMS [17]
Atom is a neutral element found in nature without any charge. In other words, it has same number of Protons and electrons, whereas ion is a charged thing, either positive or negative. We can find their charge by:

Charge = Number of Protons - Number of Electrons

Hope this helps!
6 0
3 years ago
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An ion has a mass number of 65, 36 neutrons, and a charge of +1 . Identify the element symbol, and determine the number of proto
docker41 [41]

Answer:

Element symbol Cu

Number of protons 29

Number of electrons 28

Explanation:

To get the element symbol, we need the name of the element. To correctly identify the name of the element, we need the proton number.

Now the mass number is 65 and the number of neutrons is 36. The number of protons is this the mass number minus the number of neutrons. This equals 65 - 36 = 29 protons.

The element with 29 protons is copper Cu.

Now to get the number of electrons, for an electrically neutral atom , the number of electrons equals the number of protons. But here, the atom is not electrically neutral anymore as it has now formed a univalent positive ion of +1.

To form a positive ion, you have to do so by losing electrons. The atom in question here has just lost one electron. Thus, our of the 29, it is left with only 28 electrons.

8 0
3 years ago
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What element symbol does "X" represent?
spayn [35]

X is the chemical symbol of the element

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3 years ago
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How many moles of H are present in 3 moles of carbon trihydride?
PSYCHO15rus [73]

Answer:

answer is  b.12

Explanation:

8 0
3 years ago
How can two liquids be separated?
Leviafan [203]

Answer:

Fractional distillation

Explanation:

A method for separating a liquid from a mixture of two or more liquids. ... This method works because the liquids in the mixture have different boiling points. When the mixture is heated, one liquid evaporates before the other.

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2 years ago
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