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fredd [130]
2 years ago
9

If molar mass of M(OH)3 = 78 8. mass of M​

Chemistry
1 answer:
Cerrena [4.2K]2 years ago
5 0

Answer:

From molar mass=total RAM of each individual element

78.8=(16+1)×3+M

78.8-51=M

27.8g/mol=M

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FinnZ [79.3K]

First of all, as you seen the gases are noble which means that will not react with each other and in this case each gas create individual pressure.  

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P_{Ar} = pressure of argon  

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P_{T} = P_{Ne} + P_{Ar} + P_{He}    

1.25 = 0.68 + 0.35 +  P_{He}

P_{He}   = 1.25  - [0.68 + 0.35] = 0.22 atm

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