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How many 4He2 atoms are present in a sample of the atoms weighing 24 a.m.u?

How many 4He2 atoms are present in a sample of the atoms weighing 24 a.m.u?

Grade:10

6 Answers

Gaurav Yadav
406 Points
one month ago
Hey student
 
Mass of 1 He atom = 4 a.m.u
 
Let the number of atoms in the sample be ‘x’.
 
Therefore, the total mass of the sample = 4x, which is equal to 24 a.m.u.
⇒ 4x = 24
⇒ x = 6
 
Hence, there are 6 He atoms in the sample.
 
Nandini Sharma
25 Points
one month ago
How can we separate the components of a compound?
 
Please answer this question urgently. Please. Please.
Gaurav Yadav
406 Points
one month ago
Hey student.
 
The constituents of a compound can not be separated by physical methods. They can only be separate by chemical methods.
 
This is the answer to your question. Hope this helps you.
Nandini Sharma
25 Points
one month ago
How are physical properties different from chemical properties?
 
Please answer this one urgently. Please. Please
Gaurav Yadav
406 Points
one month ago
Hey student.
 
Physical properties are those properties which can be measured or observed without changing the identity or the composition of the substance whereas the measurement of chemical properties require a chemical change to occur e.g. colour, odour etc are physical properties and combustion, basicity etc are chemical properties.
 
This is the answer to your question. Hope this helps you.
ajay
100 Points
one month ago
Mass of 1 He atom = 4 a.m.u
 
Let the number of atoms in the sample be ‘x’.
 
Therefore, the total mass of the sample = 4x, which is equal to 24 a.m.u.
⇒ 4x = 24
⇒ x = 6
 
Hence, there are 6 He atoms in the sample.
 
 

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