1.

Calculate the mass of the following: 0.3 mole of aluminium (Atomic mass of Al = 27)

Answer»

Solution :`"Number of MOLES"=("Mass of AL")/("ATOMIC mass of Al")`
`"Mass"="No. of moles"XX"atomic mass"`
`"So, MAS of Al"=0.3x23`
`=8.1g`


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