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Keith_Richards [23]
3 years ago
14

Two atoms of the same substance wi the different numbers of neutrons are called what

Chemistry
1 answer:
sattari [20]3 years ago
4 0
They are called ISOTOPES.
:)
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The boiling point of a substance in City A is found to be 145°C the boiling point of th same substance in Xity B is 141°C which
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City B. Higher altitudes have lower boiling points due to lower atmospheric pressure at higher altitudes
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During the combustion of methane (CH4), one mole of methane gas combines with two moles of oxygen gas (O2) to produce one mole o
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Answer:

CH4(g) +2O2____ CO2(g) +2H2O (l)

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2 years ago
Which species acts exclusively as spectator ions in this reaction
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Answer:

K^+ and NO3^-

Explanation:

In a balanced ionic equation, we usually see the species that react to yield the main product in the reaction.

Consider the reaction;

Pb(NO3)2(aq) +2 KI(aq) -------> PbI2(s) + 2KNO3(aq)

The main product in this reaction is PbI2. Hence the balanced ionic equation is;

Pb^2+(aq) + 2I^-(aq) ------> PbI2(s)

Notice that K^+ and NO3^- did not participate in this reaction. All ions that are part of the molecular equation but do not participate in the ionic reaction equation are called spectator ions. Hence K^+ and NO3^- are spectator ions in this reaction as can be seen clearly above.

4 0
3 years ago
Which element has properties most similar to Bromine? <br> A) F <br> B) Kr <br> C) S <br> D) Se
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Fluorine (F) will have properties similar to Bromine (Br) because it belongs to the same group as Bromine.
7 0
3 years ago
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pH indicator. A dye that is an acid and that appears as different colors in its protonated and deprotonated forms can be used as
Vitek1552 [10]

Answer:

pH = 7.8

Explanation:

The Henderson-Hasselbalch equation may be used to solve the problem:

pH = pKa + log([A⁻] / [HA])

The solution of concentration 0.001 M is a formal concentration, which means that it is the sum of the concentrations of the different forms of the acid. In order to find the concentration of the deprotonated form, the following equation is used:

[HA] + [A⁻] = 0.001 M

[A⁻] = 0.001 M - 0.0002 M = 0.0008 M

The values can then be substituted into the Henderson-Hasselbalch equation:

pH = 7.2 + log(0.0008M/0.0002M) = 7.8

7 0
3 years ago
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