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Artemon [7]
3 years ago
7

PLEASE HELP ME ASAP Identify the arrows that show the correct direction of heat transfer.

Chemistry
1 answer:
adell [148]3 years ago
6 0

Answer: Left Arrow Far right arrow and center left arrow

Explanation:

These three arrows are correct due to heat transfers to cooler temp environments which allows the expansion of speed for molecules in their environment.

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Which of the following is not included in John Dalton's modern theory of the atom?
Akimi4 [234]

The answer for the following question is option "C".

Option C is not included in the John Dalton's modern theory of an atom.

  • "It states atoms of different elements combine to form new compound" but not new elements

Explanation:

According to John's Dalton's modern theory of an atom:

1. All matter is composed of atoms.

2. Atoms cannot be created,destroyed or subdivided in the ordinary chemical reactions.

3. Atoms of one element differ in the properties from atoms of an another element.

(i.e.)Each and every atom of the element has its own unique properties of their own.

4. Atoms of one  element combine with the atoms of another element to <u>form new compound.</u>

5. Atoms that make up an element are identical to each other.

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What compound does hydrogen form?​
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It forms covalent compounds
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It is important because if the sample size is smaller, outliers could skew the data more than if it was large.
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Bacteria can’t live without humans
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The solubility product for Zn(OH)2 is 3.0×10−16. The formation constant for the hydroxo complex, Zn(OH)2−4, is 4.6×1017. What is
Yuri [45]

Answer:

[OH^-]= 1.12 \times 10^{-2} \ M

Explanation:

\text{From the information given:}

K_{sp} \ of \ Zn(OH)_2 \ is \ 3.0 \times 10^{-16}

K_f \ of \ Zn(OH)_2 = 4.6 \times 10^{17}

\mathtt{K_{sp} \ \ \ \ \ \ \ \ \mathtt{Zn(OH)_{2(s)}} \to Zn^{2+}_{(aq)} + 2OH^{-}_{(aq)} }

\mathtt{K_{f} \ \ \ \ \ \ \ \ \mathtt{Zn^{2+}_{(aq)} } + 4OH^-_{(aq)} \to Zn(OH)^{2-}_{4}_{(aq)}}

\mathtt{K \ \ \ \ \ \ \ \ \mathtt{{Zn(OH)_{2}_{(s)}}} + 2OH^{-}_{(aq)}  \to Zn(OH)^{2-} _{4(aq) }}

\text{To calculate the minimum concentration of OH}^{-}

K = \dfrac{Zn(OH)^-_4}{[OH^-]^2} \\ \\

[OH^-]^2= \dfrac {0.017}{1.380 \times 10^2}

[OH^-]^2=1.232 \times 10^{-4}

[OH^-]= 1.12 \times 10^{-2} \ M

8 0
2 years ago
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