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garik1379 [7]
3 years ago
8

What is the name of the molecule shown below?

Chemistry
1 answer:
DiKsa [7]3 years ago
8 0

Answer:

the correct awnser is b 1-heptene

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Every day, about 1 4 0 , 0 0 0 , 0 0 0 140,000,000140, comma, 000, comma, 000 plastic water bottles are bought in the United Sta
jeka94

Answer:

0.875 time.

Explanation:

The length of plastic water bottles are bought in the United States every day = (the no. of plastic water bottles are bought every day)(length of each bottle) = (140.0 million bottle)(0.25 m) = 35.0 million meter.

The length of the equator of the earth = 40.0 million meter.

∴ The times can the Earth's equator be circled by a line of plastic bottles used in the United States every day = (The length of plastic water bottles are bought in the United States every day)/(The length of the equator of the earth) = (35.0 million meter)/(40.0 million meter) = 0.875 times.

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3 years ago
Will no3− ions affect the ph of a solution? will ions affect the ph of a solution? no3− ions will not affect the ph. no3− ions w
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NO3- will affect the pH of a solution. The ion will decrease the pH of a neutral solution. No3- ion is a conjugate base of a strong acid, therefore, if it added to a neutral solution of pH 7, it will change the pH of the solution by decreasing the pH, that is, the solution will become acidic in nature. 
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Cho muối X vào dd NaOH, đun nóng, thu được một chất khí làm xanh giấy quỳ ẩm. Chất nào sau đây thỏa mãn tính chất của X?
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A is correct <em>answer.I </em><em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>you</em>

4 0
2 years ago
to treat a thyroid tumor a patient myst be given 150-mCi dose of iodine-131, supplied in a solution containg 32 mCi/mL what volu
kolezko [41]

That would be about 170/41=4.1

4 0
3 years ago
"What is the hydronium ion concentration in a 0.100-M solution of ammonium nitrate, NH4NO3, a salt composed of the ions NH4 + an
Xelga [282]

Answer:

A.  [H₃O⁺] = 7.4 * 10⁻⁶

B. C₆H₅NH₃⁺ is the stronger acid

Explanation:

A. Ammonium nitrate,  NH₄NO₃ dissolves in solution to form ammonium ions  NH₄⁺ which act as a weak acid by protonating water to form ammonia,  NH₃ (aq) and hydronium ions  H₃O⁺(aq) :  NH₄⁺ (aq) + H₂O (l) →  H₃O⁺(aq) + NH₃(aq)

Using the acid dissociation formula, Ka (NH₄⁺) = [NH₃] [H₃O⁺] / [NH₄⁺ ] where Ka of NH₄⁺ = 5.6 * 10⁻¹⁰, [NH₄⁺ ] = 0.100 M,

Let [NH₃] = x, and [H₃O⁺] = x; since one molecule of hydronium ion must form for every one of ammonia that forms. The assumption is also made that x << than 0.1 M due to the small Ka.

5.6 * 10⁻¹⁰ = [x] [x]  / 0.1

[x]² = 5.6 * 10⁻¹¹

[x] = 7.4 * 10⁻⁶

Therefore, [H₃O⁺] = 7.4 * 10⁻⁶

B. The strength of an acid is measured by its dissociation constant, Ka, which can also be expressed as pKa. Where pKa = -log₁₀Ka

The higher the value of an acid's dissociation constant, Ka, (or the lower its pKa) the stronger the acid.

The dissociation constants Ka, as well as pKa of C₆H₅NH₃⁺ and NH₄⁺ are given below:

C₆H₅NH₃⁺ :   Ka = 1.3 * 10⁻⁵; pKa = 4.87

NH₄⁺ : Ka = 5.6 * 10⁻¹⁰; pKa = 9.25

From the above, it can be seen that C₆H₅NH₃⁺  has a  higher Ka than NH₄⁺, therfore, it is the stronger acid.

3 0
3 years ago
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