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

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?

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.

Nandini Sharma
25 Points
one month ago
How are physical properties different from chemical properties?

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.

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.