Avogardo's number is a constant, named after the scientist Amedeo Avogadro that represents the number of molecules or atoms that are contained in the amount of substance given by one mole.<span> Na= 6.022×10</span><span>23
Mole on the other hand is </span> a chemical mass unit,defined to be 6.022 x 1023 molecules<span>, </span>atoms, or some other unit. This is the reason why t<span>he mole and Avogadro’s number are now almost synonymous with each other. </span>
True, because matter is anything that occupies space and has mass.
To know the number of atoms, it will be necessary to use the formula of avogadro. We calculate the number of moles then we can calculate the number of avogadro.
The molar mass of:
Phosphorus = 31g / mol
Mercury = 200 g / mol
Bismuth = 209 g / mol
Strontium = 87 g / mol.
The number of avogadro (N) is 6.023 10 ^ 23
n = m (mass) / M (molar mass)
number of atoms = n. N = m / M . N
number of phosphorus atoms = 5.14/31 . 6.023 10^23 = 9.98 10 ^ 22 atoms
Number of atoms of mercury = 2.16/200 . 6.023 10^23 = 6.5 10 ^ 21 atoms
Number of bismuth atoms = 1.8/209 . 6.023 10^23 = 5.18 10 ^ 21 atoms
Number of strontium atoms = 8.8 x 10-2 /87 . 6.023 10^23 = 6.09 10 ^ 20 atoms
Answer:
A gas occupies a volume of 473 ml at 36.0°C. What will the new volume of the gas be ... If the initial pressure of the gas was 200. kPa what was the initial temperature? ... 6. 65 liters of a gas at a pressure of 0.80 atm is to be expanded to a new ... new pressure be if its temperature is changed to 50° Cognd its volume to 400.
Explanation:
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