Answer:
(C) The average speed of molecules in ethane is the same as that of propanol.
Explanation:
In gas behavior, temperature is directly linked with speed. At a constant temperature, speed remains consistent. Also, we understand that ideal gases exhibit uniform behavior, irrespective of their type.
B The two substances exhibit distinct physical and chemical characteristics, even though they are both composed of nitrogen and oxygen.
According to the periodic table:
the molar mass of carbon is 12 g/mol
the molar mass of hydrogen stands at 1 g/mol
the molar mass of oxygen is 16 g/mol
the molar mass of <span>acetylsalicylic acid calculates to 9(12) + 8(1) + 4(16) = 180 g/mol
To find the number of moles, we apply the formula mass / molar mass = 0.5 / 180 = 2.778 x 10^-3 moles
To determine the number of molecules, we multiply the moles by Avogadro's number as shown:
number of molecules = </span>2.778x10^-3x6.02x10^23 =1.672 x 10^21 molecules
The electronic configurations will be listed as follows. Electronic configuration refers to how electrons are arranged around an atom's nucleus. The number of electrons in an atom corresponds to its atomic number. The atomic number indicates how many protons or electrons are present in a neutral atom, meaning the atomic number equals the count of both protons and electrons. For manganese, its atomic number is 25, which equals the number of protons. Thus, the number of electrons, considering any charge, is 25 for a neutral manganese atom. In the case of the Mn atom, there are 25 electrons. The electronic configuration for Mn is specified as follows: For the Mn2+ ion, the number of electrons is 25 - (+2) = 23. For the Mn4+ ion, the count is 25 - (+4) = 21. For the Mn6+ ion, the total becomes 25 - (+6) = 19. Finally, for the Mn7+ ion, we have 25 - (+7) = 18. The electronic configurations are summarized above.
N(H₂O):n(NO)=6:4(3:2), n(NO)=2·3,5mol÷3=2,33mol
Thus, the answer is a).
