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Kay [80]
3 years ago
11

How many neutrons are in the nucleus of an atom that has an atomic mass of 36 and an atomic number of 25?

Chemistry
2 answers:
elixir [45]3 years ago
6 0

Answer:

Neutrons = 11

Explanation:

To get the number of neurons an element has you have to subtract the number of protons from the atomic mass of that element.

The number of protons is equal to the atomic number of that element.

Atomic number = Number of Protons

So the number of protons is 25

Neutrons = Atomic mass - Number of Protons

Neutrons = 36 - 25

Neutrons = 11

Anvisha [2.4K]3 years ago
5 0

Answer: 11

Explanation: To calculate the number of neutrons in the core of an atom, we need to subtract the atomic mass from the atomic number. In this problem, we are given our atomic mass which is 36 and our atomic number is 25.

36 - 25 = 11

Therefore, there are 11 neutrons in the core of the atom.

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What is the empirical formula for a compound that is 31.9% potassium, 28.9% chlorine, and 39.2% oxygen?
notsponge [240]
The  empirical formula  for a compound   is KClO3

     Explanation 
 
find  the  moles of each  element
moles  = % composition/molar  mass

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moles  of potassium  =  31.9 / 39 = 0.818  moles
moles of  chlorine    = 28.9/35.5 = 0.814 moles
moles of   oxygen  =  39.2/  16 =  2.45  moles


find the  mole ratio  by  dividing   with  the smallest  mole = 0.814  moles

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the empirical  formula   is therefore = KClO3
7 0
3 years ago
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