Answer:
See Explanation
Explanation:
1) Let us recall that;
Mass number = number of protons + number of neutrons
Where;
Number of protons = ?
Number of neutrons =20
Mass number =39
Number of protons = mass number - number of neutrons
Mass of protons =39 - 20= 19 protons
2) Atomic number = 13
Number of neutrons =14
Then the mass number =13 +14 =27
The symbol of the element is 27X13
The number of protons= the number of electrons =13
The atomic number is the same as the proton number =13
Answer:
evaporation or water runoff that's my tips
rain or thunder storm
A 0.750 g sample of tin is oxidized with nitric acid to form tin oxide. if the original tin sample gained 0.21 g of oxygen, the empirical formula of tin oxide is SnO₂.
A 0.750 g sample of tin is oxidized with nitric acid to form tin oxide. if the original tin sample gained 0.21 g of oxygen, the mass of tin oxide is:

Then, we will calculate the mass percent of each element in the oxide.

Next, we will divide each percentage by the atomic mass of the element.

Finally, we will divide both numbers by the smallest one, i.e. 0.66.

The empirical formula of tin oxide is SnO₂.
A 0.750 g sample of tin is oxidized with nitric acid to form tin oxide. if the original tin sample gained 0.21 g of oxygen, the empirical formula of tin oxide is SnO₂.
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