<span>If you give it a good search, the most used answer would probably be as follows,
</span><span>In 1914 Henry Moseley found a relationship between an element's X-ray wavelength and its atomic number (Z), and therefore rearranged the table by nuclear charge / atomic number rather than atomic weight. Before this discovery, atomic numbers were just sequential numbers based on an element's atomic weight. Moseley's discovery showed that atomic numbers had an experimentally measurable basis.
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Hope this helps!
Answer: Simple,
Explanation: There is only one atom in a monoatomic ion and there are many atoms in a polyatomic
A. Barium with 56 is correct
Answer:
C6H24S3
Explanation:
To go from Empirical Formula to Molecular Formula, you have to divide the actual amount (given) by the molar mass of the EF:
192 / 2(12.01)+8(1.01)+(32.06)
= 2.99
= 3
Then you multiply every subscript in the EF by 3, which gives you C6H24S3
Hope this helps!
-Emma Victoria
Answer:
2.19L
Explanation:
Information from the question include:
V1 (initial volume) = 2.3L
P1 (initial pressure) = 725mmHg
P2 (final pressure) = 760mmHg
V2 (final volume) =?
With the Boyle's law equation P1V1 = P2V2, the final volume can easily be obtain as follow:
P1V1 = P2V2
725 x 2.3 = 760 x V2
Divide both side by 760
V2 = (725 x 2.3)/760
V2 = 2.19L
Therefore, the new volume of the gas at standard pressure is 2.19L