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Aneli [31]
3 years ago
8

Positive or negative , guys?

Chemistry
1 answer:
dalvyx [7]3 years ago
5 0
I think it’s positive
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What is the half-life (in seconds) of a zero-order reaction which has an initial reactant concentration of 0.884 M with a k valu
pantera1 [17]
<span>Answer: 8.15s
</span><span />

<span>Explanation:
</span><span />

<span>1) A first order reaction is that whose rate is proportional to the concenration of the reactant:
</span><span />

<span>r = k [N]
</span><span />

<span>r = - d[N]/dt =
</span><span />

<span>=> -d[N]/dt = k [N]
</span><span />

<span>2) When you integrate you get:
</span><span />

<span>N - No = - kt
</span>
<span></span><span /><span>
3) Half life => N = No / 2, t = t'
</span><span />

<span>=> No - No/ 2 = kt' => No /2 = kt' => t' = (No/2) / k
</span><span />

<span>3) Plug in the data given: No = 0.884M, and k = 5.42x10⁻²M/s
</span>
<span /><span /><span>
t' = (0.884M/2) / (5.42x10⁻²M/s) = 8.15s</span>
6 0
3 years ago
Read 2 more answers
Consider the following data on some weak acids and weak bases:
Juli2301 [7.4K]

Answer:

See explaination

Explanation:

Please kindly check attachment for the step by step solution of the given problem.

8 0
3 years ago
Which one would it be since covalent bond is not here :( please help meeee
timurjin [86]
Non polar covalent bond. The Cl's electronegativity is the same since it's the same atom. Therefore, they will be nonpolar
5 0
3 years ago
How many ammonium ions and how many sulfate ions are present in an 0.250 mol sample of (nh42so4?
Nastasia [14]
Thw answer is PHj78 JJ CP30 R2D2
7 0
2 years ago
What is the precipitation reaction of sodium nitrate and lead (II)?
Vadim26 [7]
The precipitation reaction of sodium nitrate and lead (II) chloride would not happen. No reaction will happen between these substances. Hope this answers the question. Have a nice day.
8 0
3 years ago
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