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pickupchik [31]
2 years ago
15

What is the similarity between pure substances and mixtures?

Chemistry
2 answers:
Firlakuza [10]2 years ago
6 0
Mixtures are made up of 2 or more pure substances. pure substance is just its self and a mixture is multiple substances.
yuradex [85]2 years ago
4 0

Answer:

Mixtures and pure substances are alike because mixtures are made up of two or more pure substances. This means that where pure substances have a single set of properties, mixtures may have two or more sets of the same properties, based on the pure substances that make up the mixture.

Explanation:

Hope it helps, Good luck And mark as BRAINLIEST

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Calculate the ph of a 0.021 m nacn solution. [ka(hcn) = 4.9  10–10]
ohaa [14]

<span>Answer is: pH of solution of sodium cyanide is 11.3.
Chemical reaction 1: NaCN(aq) → CN</span>⁻(aq) + Na⁺<span>(aq).
Chemical reaction 2: CN</span>⁻ + H₂O(l) ⇄ HCN(aq) + OH⁻<span>(aq).
c(NaCN) = c(CN</span>⁻<span>) = 0.021 M.
Ka(HCN) =  4.9·10</span>⁻¹⁰<span>.
Kb(CN</span>⁻) = 10⁻¹⁴ ÷ 4.9·10⁻¹⁰ = 2.04·10⁻⁵<span>.
Kb = [HCN] · [OH</span>⁻] / [CN⁻<span>].
[HCN] · [OH</span>⁻<span>] = x.
[CN</span>⁻<span>] = 0.021 M - x..
2.04·10</span>⁻⁵<span> = x² / (0.021 M - x).
Solve quadratic equation: x = [OH</span>⁻<span>] = 0.00198 M.
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4 0
3 years ago
I WILL GIVE 50 POINTS AND BRAINLIEST What is the volume of 41.2g argon at stp???
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Explanation:

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Explanation:

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2 years ago
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Fantom [35]

Answer: A pattern of same atomic orbitals can be seen about elements in the same period with respect to electron structures.

Explanation:

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Elements present in the same period will have same atomic orbitals.

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