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lana66690 [7]
3 years ago
11

An atom has a mass number of 24 and 13 neutrons. What is the atomic number of this atom?

Chemistry
2 answers:
netineya [11]3 years ago
6 0
A=Mass number=24
N=neutrons=13
Z=atomic number.

A=Z+N

24=Z+13
Z=24-13
Z=11

The atomic number is 11, and this atom is sodium. 
Lady_Fox [76]3 years ago
3 0
11,the numbers of protons and electrons are always equal in an atom,the numbers of protons tell us about atomic number of element
mass number=no. of P+no. of N
here,24
no. of P(atomic number)=24-13=11
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We'll begin by calculating the number of mole in 42 g of baking soda (NaHCO₃). This can be obtained as follow:

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Mole of NaHCO₃ = 42/84

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Next, balanced equation for the reaction. This is given below:

NaHCO₃ + HC₂H₃O₂ → NaC₂H₃O₂ + H₂O + CO₂

From the balanced equation above,

1 mole of NaHCO₃ reacted to produce 1 mole of CO₂

Finally, we shall determine the number of mole of CO₂ produced by the reaction of 42 g (i.e 0.5 mole) of NaHCO₃. This can be obtained as follow:

From the balanced equation above,

1 mole of NaHCO₃ reacted to produce 1 mole of CO₂.

Therefore, 0.5 mole of NaHCO₃ will also react to produce 0.5 mole of CO₂.

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