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a sample of hard water is found to contain 40mg of Ca2+ ions/lit d amount of washing soda [Na₂ CO₃ ] required to soften 5 lit of sample is [in mg ]

K₂ Cr₂ O₇ is isomorphous to K₂SO₄ it is found to contain 26.78% Cr cal d atomic mass of Cr
[K=39.10]

d %of H in H₂O & H₂O₂ r resply 11.2% & 5.94% dis llustrates __ law

hope ull ans

#Chemistry #Physical Chemistry

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7 Answers

1

kamalendu ghosh ·2009-05-18 07:09:08

for q 1 find how much Na2CO3 is required to form CaCO3

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1

jb6098 swathi ·2009-05-18 07:09:58

den 4 2nd sum

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1

Manas ·2009-05-18 07:17:46

hey for isoamorphos compounds.

^{atomic wt of compoung A}/_{atomic wt of compound B}=ratio of their weights

using that u can get the answer

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1

Manas ·2009-05-18 07:18:19

for the third one...... Multiple Proportions law

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1

brinda laxmi ·2009-05-18 23:26:37

but d ans given was conservation of mass even i got ur ans by d by wats ur marks in AIEEE

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1357

Manish Shankar ·2009-05-18 23:49:00

Third one is law of multiple proportions only

first one can be done as kamalendu said

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Manas ·2009-05-19 00:04:54

is my method for the 2^nd question correct.????????

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Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

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° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω