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kiruha [24]
3 years ago
15

Which soil level contains the most humus ? a. a horizon b. b horizon c. c horizon d. d horizon

Chemistry
2 answers:
laiz [17]3 years ago
8 0
The A horizon contains the most humus. yummmm grab me some pita chips!
Ivanshal [37]3 years ago
3 0

Answer:

a

Explanation:

bc i said so i dont need an explanation

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If you needed to make 100 mL of a 0.2 M fruit drink solution from the 1.0 M fruit drink solution, how would you do it? (Hint: Us
grigory [225]

Answer:

We take 20.0 mL of the 1.0 M fruit drink solution and then add 80.0 mL of water to  make 100 mL of a 0.2 M fruit drink solution.

Explanation:

  • Using the rule that: the no. of millimoles of a solution before dilution is equal to the no. of millimoles of the solution after the dilution.

<em>(MV) before dilution = (MV) after dilution.</em>

M before dilution = 1.0 M, V before dilution = ??? mL.

M after dilution = 0.2 M, V after dilution = 100 mL.

<em>∴ V before dilution = (MV) after dilution / M before dilution </em>= (0.2 M)(100 mL) / (1.0 M) = <em>20.0 mL.</em>

<em>So, we take 20.0 mL of the 1.0 M fruit drink solution and then add 80.0 mL of water to  make 100 mL of a 0.2 M fruit drink solution.</em>

8 0
3 years ago
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Equivalencia de un año luz en SI
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3 years ago
2. Carbon-11 is a radioactive isotope of carbon. Its half-life is 10 minutes.
Annette [7]
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4 0
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g All of the molecules below have polar bonds but only one of the molecules is a polar molecule. Which one is a polar molecule?
lbvjy [14]

Answer: NF_3

Explanation:

Geometrical symmetry of the molecule and the polarity of the bonds determine the polarity of the molecule.

The molecule that has zero dipole moment that means it is a geometrically symmetric molecule and the molecule which has some net dipole moment means it is a geometrically asymmetric molecule.

As the molecule is symmetric, the dipole moment will be zero as dipole moments cancel each other and the molecule will be non-polar.

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Thus, we can say that NF_3 is a polar molecule.

4 0
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