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mamaluj [8]
3 years ago
6

Which element has 51 protons in its nucleus?

Chemistry
1 answer:
777dan777 [17]3 years ago
5 0

Answer:

Antimony

Explanation:

Protons-51

Neutrons-71

Electrons-51

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Why is an amide less reactive to nucleophilic acyl substitution than an acid chloride?
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An amide is less reactive to nucleophilic acyl substitution than an acid chloride because more electron density is donated to the carbonyl by nitrogen.

<h3>What is electron density?</h3>

In quantum chemistry, electron density, also known as electronic density, is a metric for the likelihood that an electron will be found at a microscopic portion of space surrounding a specific point. The likelihood of finding an electron at a particular position near an atom or molecule is represented by electron density. In general, areas with a high electron density are where the electron is most likely to be located. The attractive forces between the electrons and the nuclei in a molecule are what hold the nuclei together in molecule, hence the electron density is essential to the bonding and geometry of a molecule. The repulsions between the nuclei and the electrons function as an antagonist to these attractive forces.

To learn more about electron density, visit:

brainly.com/question/13152866

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Does anyone want to do stoichiometry? <br> im so tired of chemistry.
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In which situation is no work considered to be done by a force?
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6 0
3 years ago
In a certain chemical process, water reacts with a compound, and the water is converted into another compound during the reactio
gtnhenbr [62]

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CH_2=CH_2(g)   +   H_2O(g)  ⇄  CH_3CH_2OH(g)

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The two gases, H2 and O2, were allowed to effuse under the same conditions through a pinhole. If the rate of effusion of O2 was
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<h3>Further explanation  </h3>

Graham's law: the rate of effusion of a gas is inversely proportional to the square root of its molar masses or  

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\rm \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }

or  

\rm M_1\times r_1^2=M_2\times r_2^2

MW₁ O₂ = 32 g/mol

MW₂ H₂ = 2 g/mol

\tt \dfrac{1.8\times 10^{-2}}{r_2}=\sqrt{\dfrac{2}{32} }\\\\\dfrac{(1.8\times 10^{-2})^2}{r_2^2}=\dfrac{2}{32}\\\\r_2=0.072=7.2\times 10^{-2}~m/s

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