The mass of 2.88 × 10²² molecules of Bi (NO₃)₃ is 678.854 grams.
<h3>What is mass?</h3>
Mass is the quantity of matter in a physical body. Mass can be calculated by dividing the molar mass by the mass of the moles of the substance.
The molar mass of Bi (NO₃)₃ is 1461.99 g/mol
The molecules here is 2.88×10²²
The number of molecules will be divided by 6.023 x 10²³
2.88×10²² / 6.023 x 10²³ = 4.781 moles
Putting the value in the equation
mole = mass/molar mass
mass = moles x molar mass
4.781 x 1461.99 = 678.854 grams
Thus, the mass of 2.88×10²² molecules of Bi (NO₃)₃ is 678.854 grams
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Answer:Ethanol can be made by a process called fermentation. During fermentation, sugar (glucose) from plant material is converted into ethanol and carbon dioxide. ... 90 per cent of the world's ethanol is made using fermentation.
Explanation:
Answer: The correct answer is option D.
Explanation: Super-giant stars are the stars which are greater than Sun. They have a mass hundred time greater than Sun and can be thousand times greater than Sun.
The masses of the stars are represented in Solar masses which is the mass of the Sun.
Mass of Betelgeuse = 20 Solar masses
Mass of Pollux = 1.7 Solar masses
Mass of Sirius = 2.02 Solar masses
Mass of Sun = 1 Solar mass.
As, the mass of Sun is the least from the given stars. Hence, it is least considered as a super-giant.
