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please explain this
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Asked by ajaydasbelarahi44 | 27 Oct, 2020, 09:34: AM
answered-by-expert Expert Answer
Molar mass of Aluminium Oxide-  
M o l a r space m a s s space o f space a l u m i n i u m space o x i d e space left parenthesis A l subscript 2 O subscript 3 right parenthesis equals 2 cross times 27 plus 3 cross times 16 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 102 space g 102 space straight g space of space Al subscript 2 straight O subscript 3 space equals 6.022 cross times 10 to the power of 23 space molecules space of space Al subscript 2 straight O subscript 3 Then comma space 0.051 space straight g space of space Al subscript 2 straight O subscript 3 space contains space equals fraction numerator 6.022 cross times 10 to the power of 23 over denominator 102 cross times 0.051 end fraction equals 3.011 cross times 10 to the power of 20 space molecules space of space Al subscript 2 straight O subscript 3
Answered by Ravi | 28 Oct, 2020, 02:28: PM
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CBSE 9 - Science
why we say Thompson model did not mention how positive charges holds negative charged elections but we know that he told about electromagnetic force that holds them together then why we say that it failed to explain stability of atom
Asked by neha280284 | 10 Jan, 2023, 07:04: AM
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CBSE 9 - Science
what will be the final oxidation state of an ion A^+3 if it gains 7electeons
Asked by lakshmidevipagadala4609 | 21 Jun, 2022, 06:20: PM
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CBSE 9 - Science
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CBSE 9 - Science
what are the characteristics of matter
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CBSE 9 - Science
what is condensation
Asked by pratyushkr1234 | 21 Jun, 2021, 01:03: PM
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CBSE 9 - Science
what is the evaporation?
Asked by viratamana3007 | 23 Jan, 2021, 01:00: PM
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CBSE 9 - Science
Two different ideal gases are placed, one into one flask and the other into another identical flask, the flask being connected by a valve. The valve is opened and the temperature is kept constant. The experimental results indicate that the driving force of the change which occurred was the tendency of the system toward lowest energy highest energy highest entropy lowest entropy  
Asked by rajembbs2002 | 03 Jan, 2021, 04:34: PM
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CBSE 9 - Science
all questions of chapter 1
Asked by bansiewchyne | 15 Nov, 2020, 06:07: PM
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CBSE 9 - Science
please explain this
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Asked by ajaydasbelarahi44 | 27 Oct, 2020, 09:34: AM
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CBSE 9 - Science
what is reaction
Asked by vinitranjan480 | 25 Jul, 2020, 06:08: PM
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