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ValentinkaMS [17]
3 years ago
9

Someone sprays perfume in another room. It can be smelled a few minutes later.

Chemistry
2 answers:
Mandarinka [93]3 years ago
8 0
I think the answer is B or C I know it is one of those

garri49 [273]3 years ago
6 0
The answer is active transport

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Dissolved minerals trapped in magma under tremendous pressure provide the force for a volcanic eruption.
dmitriy555 [2]
Not so. Dissolved gases trapped in the minerals provide the pressure for an explosive eruption.
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2 years ago
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117 milligrams (mg) of purified product was isolated from a chemical reaction. This experimental yield of product represents a 8
Brut [27]

Answer:

131 mg

Explanation:

Percent yield = 89%

Actual yield = 117 mg

Percent yield is given by

\text{Percent yield}=\dfrac{\text{Actual yield}}{\text{Theoretical yield}}\times 100\\\Rightarrow 89=\dfrac{117}{\text{Theoretical yield}}\times 100\\\Rightarrow \text{Theoretical yield}=\dfrac{117}{89}\times 100\\\Rightarrow \text{Theoretical yield}=131.46\approx 131\ \text{mg}

The theoretical yield, for this reaction is 131 mg.

5 0
2 years ago
Once formed, how many valence electrons does an anion hold?
Elena-2011 [213]

Answer:

Anions. Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions.

7 0
3 years ago
Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (Use the periodic table as ne
hodyreva [135]

Answer:

Explanation:

Group           Most Likely Ionic Charge               Number of Valence Electrons

   I                                 +1                                                           1

   II                                 +2                                                         2

   III                                +3                                                          3

   IV                           +4 or -4                                                     4

   V                                  -3                                                         5

   VI                                 -2                                                         6

  VII                                 -1                                                          7

  VIII                                 0                                                          8

For elements in group IV and above, their ionic charge is (8-number of their valence electrons.)

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3 years ago
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Which system of measurement does the U.S. use?????
nasty-shy [4]
U.S customary system 
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