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Alexandra [31]
3 years ago
9

Dalton assumed that all atoms of the same element were identical in all their properties. Explain why this assumption is not val

id.
Chemistry
1 answer:
jeka57 [31]3 years ago
4 0
This assumption is not valid because, there are some elements which exist in two or more forms;  they have the same atomic number but differ in their mass number, which meas that they possess different number of neutrons. These type of element are called isotopes. Isotope have the same atomic number  and similar physical and chemical properties but they have different number of neutrons and therefore possess different masses.  
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Answer:

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Explanation:

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Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

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n = moles of solute

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Now put all the given values in the formula of molality, we get

Molarity=\frac{0.250mol}{2.00L}=0.125M

Therefore, the molarity of the solution is 0.125 M

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