Answer:
Root mean squared velocity is different.
Explanation:
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In this case, since we have a mixture of oxygen and nitrogen at STP, which is defined as a condition whereas T = 298 K and P = 1 atm, we can infer that these gases have the same temperature, pressure, volume and moles but a different root mean squared velocity according to the following formula:
Since they both have a different molar mass (MM), nitrogen (28.02 g/mol) and oxygen (32.02 g/mol), thus we infer that nitrogen would have a higher root mean squared velocity as its molar mass is less than that of oxygen.
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Answer:
The answer is a
Explanation:
conduction is the transfer of thermal energy when two substances of different temperature touch.
This is a Physical change. No chemistry involved.
<u>Answer:</u> The atomic mass of carbon is 12 amu and that of carbon dioxide is 44 g/mol
<u>Explanation:</u>
Molar mass is defined as the sum of the mass of all the atoms each multiplied its atomic masses that are present in the molecular formula of a compound. It is expressed in g/mol.
We know that:
Atomic mass of carbon = 12 amu
We are given a chemical compound, carbon dioxide having chemical formula of 
Molar mass of carbon = 12 g/mol
Molar mass of oxygen = 16 g/mol
Evaluating the molar mass of carbon dioxide, we get:
Molar mass of ![CO_2=[12+(2\times 16)]=44g/mol](https://tex.z-dn.net/?f=CO_2%3D%5B12%2B%282%5Ctimes%2016%29%5D%3D44g%2Fmol)
Hence, the atomic mass of carbon is 12 amu and that of carbon dioxide is 44 g/mol
Answer:
C - show 7 neutrons in the nucleus
Explanation:
Use process of elimination:
-Answer A will not work because electrons are not in the nucleus.
-Answer B will change the atom's identity from nitrogen to fluorine; it will not work.
-Answer D will create a nitrogen ion, which is not what the prompt is asking for (an atom); it will not work.
The only logical answer is C, as that is the only one that is also true.
