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klemol [59]
3 years ago
8

Which element has 13 protons and 8 neutrons?

Chemistry
2 answers:
WINSTONCH [101]3 years ago
5 0

Answer:

only thing close I can see would be aluminun

Explanation:

atomic number of 13 and 8 2nd electrons in its shell.

Iteru [2.4K]3 years ago
4 0
Aluminum, the neutrons don’t determine the element the protons do
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Addition of 6 M HCl to which substance will not result in gas evolution? Please explain why.A) AlB) ZnC) K2CO3D) NaNO3
Westkost [7]

Answer:

Option D (NaNO_3)

Explanation:

Acids react with metal to form salt and hydrogen gas.

Metals which are more reactive than hydrogen evolve hydrogen gas on reaction with acid.

For example:

Magnesium reacts with hydrogen chloride to form magnesium chloride and hydrogen.

2HCl(aq) + Mg(s) → MgCl2(aq) + H2(g)

Al and Zn are more reactive than hydrogen, therefore, these metals evolve hydrogen gas on reaction with acid.

NaNO_3 reacts with HCl to form NaCl and nitric oxide.

HCl+NaNO_3 \rightarrow NaCl+HNO_3

K_2CO_3 reacts with HCl to form potassium chloride, carbon dioxide and water.

HCl+K_2CO_3 \rightarrow KCl+CO_2+H_2O

As reaction of  NaNO_3 does not evolve any gas, therefore, the correct option is D.

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4 years ago
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tatyana61 [14]
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Which piece of laboratory glassware did you find to be more efficient for the solvent extraction procedure, and why?
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