Answer:
This is based on the masses of one element, that will be combined with a fixed mass of the other element.
Explanation:
This is based on the masses of one element, that will be combined with a fixed mass of the other element. Thoses masses are in a ratio.
This state we can find in 'The Law of Multiple Proportions, which is part of Dalton's atomic theory
We see that in the 2 compounds, the masses of oxygen, that combine with a fixed mass of carbon , will be in proportion.
For the first oxide we have 1g carbon per 1.33 g Carbon
1g /1.33g = 0.752
For the second oxide we have 1g carbon per 2.66g Carbon
1g/2.66g = 0.376
Dividing the mass O per g C of the second (larger value) compound:
2.66 / 1.33 = 2 which is the same as 0.752 / 0.376
thus, it means that the masses of oxygen that combine with carbon are in a 2:1 ratio.
<u>Answer:</u> The order of reactivity will be F > O > N > C > B.
<u>Explanation:</u>
Reactivity of an element is defined as the tendency for it to gain or loose electrons easily.
From the given elements, all are non-metals except boron.
Boron is a metalloid and it does not attract or loose electrons easily. Hence, it is the least reactive element.
Reactivity of non-metals increases across a period because of the decrease in size and electrons are more attracted towards the nucleus and hence, can gain electrons easily. Therefore, the most reactive metal will be fluorine.
Hence, the order of reactivity will be F > O > N > C > B.
I think you forgot to give the choices along with your question. I am answering the question based on my research and knowledge. "Helium effuses 0.71 times faster than hydrogen" is the statement that <span>holds true when the molar mass of hydrogen is 2.0 grams and that of helium is 4.0 grams. I hope the answer has helped you.</span>
Chemical energy
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kinetic energy