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lora16 [44]
2 years ago
13

17. Which of the following represent the correct net ionic equations from the double replacement reaction of

Chemistry
1 answer:
Kisachek [45]2 years ago
3 0

Answer:

D. 2 NO3(aq)+Ca2+

Explanation:

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<span>The hybridization of bromine must be sp^3.</span>
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Which element is humus especially rich in?<br>oxygen <br>carbon <br>nitrogen <br>or tungsten​
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Check all items common to bases.<br> minerals<br> metal<br> gas<br> H+<br> OH-<br> nitrogen
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OH- is common to bases.

Explanation:

The base is a is an ionic compounds which when placed in aqueous solution dissociates in to a cation and an anion OH-.

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8 0
3 years ago
What is a half-life in Chemistry?
makvit [3.9K]

Answer:

half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive ...

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8 0
2 years ago
Calculate the ph of a 0.021 m nacn solution. [ka(hcn) = 4.9  10–10]
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<span>Answer is: pH of solution of sodium cyanide is 11.3.
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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.
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4 0
2 years ago
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