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ANEK [815]
3 years ago
7

Which is the correct example of an ion?

Chemistry
1 answer:
Ulleksa [173]3 years ago
5 0

Answer:

e. Two different elements with a different number of electrons. Ions are atoms that tend to lose or gain electrons so as to gain a full outer shell.

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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.

3 0
4 years ago
Is black coffee slightly acidic
tatiyna
Answer:  "Yes".
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7 0
3 years ago
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If an atom gains or loses an electron it tends to become what?
jeyben [28]
It would become a negative ion
8 0
3 years ago
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Cavendish prepared hydrogen in 1766 by the novel method of passing steam through a red-hot gun barrel:
Gnom [1K]

Answer:

4H2O(g)+3Fe(s)⟶Fe3O4(s)+4H2(g)

4H2O(g)+3Fe(s)⟶Fe3O4(s)+4H2(g)

Is there a question?

​

Explanation:

4 0
3 years ago
What does it mean for data to be continuous?
harkovskaia [24]

Answer:

Data canbe continuous in the geometry orcontinuous in the range of values. 

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