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Ronch [10]
2 years ago
15

The overall flow of energy through an ecosystem is from

Chemistry
1 answer:
Alik [6]2 years ago
7 0

Answer:

So, I don't know if this is 100% correct, but, I believe it's <u><em>B.photosynthetic organisms to herbivores to carnivores and decomposers.</em></u> I'm so sorry if it's wrong!

Explanation: looked all over go ogle.

Have a good morning, afternoon, or night!

<em>~</em><u><em>Dreamer1331</em></u><em>~</em>

<em></em>

<em></em>

<em></em>

<em></em>

<em>*please mark brainliest when possible, if correct, and if you feel I deserve it, Thank you!*</em>

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1 One mole of an element contains which of the following?
lozanna [386]

Answer:

1) B    2) both a and c

5 0
3 years ago
Calculate the molar solubility of PbBr2 (Ksp = 4.67x10-6) in 0.10M NaBr solution.
Softa [21]

Explanation:

PbBr_{2} will dissociate into ions as follows.

         PbBr_{2}(s) \rightleftharpoons Pb^{2+}(aq) + 2Br^{-}(aq)

Hence, K_{sp} for this reaction will be as follows.

                   K_{sp} = [Pb^{2+}][Br^{-}]^{2}

We take x as the molar solubility of PbBr_{2} when we dissolve x moles of solution per liter.

Hence, ionic molarities in the saturated solution will be as follows.

               [Pb^{2+}] = [Pb^{2+}]_{o} + x

               [Br^{-}]^{2} = [Br^{-}]_{o} + 2x

So, equilibrium solubility expression will be as follows.

            K_{sp} = ([Pb^{2+}]_{o} + x)([Br^{-}]_{o} + 2x)^{2}

Each sodium bromide molecule is giving one bromide ion to the solution. Therefore, one solution contains [Br^{-}]_{o} = 0.10 and there will be no lead ions. So, [Pb^{2+}]_{o} = 0

So, [Br^{-}]_{o} + 2x will approximately equals to [Br^{-}]_{o}.

Hence, K_{sp} = x[Br^{-}]^{2}_{o}

            4.67 \times 10^{-6} = x \times (0.10)^{2}

                        x = 4.67 \times 10^{-4} M

Thus, we can conclude that molar solubility of PbBr_{2} is 4.67 \times 10^{-4} M.

5 0
3 years ago
Read 2 more answers
A 5.2 molal aqueous solution of methyl alcohol, CH3OH, is supplied. What is the mole fraction of methyl alcohol in the solution?
telo118 [61]

Answer:

0.086

Explanation:

A 5.2 molal aqueous solution of methyl alcohol indicates that 5.2 moles of methyl alcohol are present in 1 kilogram (or 1000 g) of water. Water has a molecular weight of 18 g/mol.

(100g)/18g/mol=55.56 mol

5.2 mol/(5.2mol+55.56 mol)=0.086

4 0
2 years ago
Why does a solid have a definite shape and volume?
erica [24]

Answer:

B

Explanation:

The particles are bound to each other and they vibrate at an almost undetectable rate.

8 0
3 years ago
Which of the following would not be an isotope of carbon-12? A. Carbon-14 B. Carbon-13 C. Boron-12 D. Carbon-11
Oliga [24]
C because it isn't carbon
6 0
3 years ago
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