<span>The answer would be: The two substances are not the same because the property that is independent of the amount of the sample is different.<span>

The two substances has different solubility which is </span></span>36 g/mL and <span>180 g/mL. The same kind of molecule should have same density and solubility, regardless the mass of the sample. In this case, the substances are not same since it has different solubility.</span>

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4 years ago

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How is Oxygen -18 different from oxygen -16?

Oksanka [162]

A O-18 has 2 more neutrons than O-16

<h3>Further explanation</h3>

Oxygen is located in group 16 in the p block which has the atomic number 8

In the atomic symbol (neutral), the atomic number indicates the number of electrons and protons. while the number of neutrons is obtained from the difference between the mass number and the atomic number.

The isotope will have the same number of protons (atomic number) but a different mass number

Isotopes of oxygen include: O-18 and O-16

$\tt _8^{18}O~\rightarrow neutron=18-8=10,proton=8\\\\_8^{16}O\rightarrow neutron=16-8=8,proton=8$

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3 years ago