Answer to Question #29120 in Inorganic Chemistry for Tarcio

Question #29120
A 3.592 (g) sample of hydrated magnesium bromide, MgBr2 {xH2O}, is dried in an oven. when the anhydrous salt is removed from the oven, its mass is 2.263 g. What is the value of x
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Expert's answer
2013-04-26T10:04:43-0400
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Comments

Assignment Expert
09.12.15, 18:26

Dear Nicola Stone,
n(number of moles) = m (mass)/ M(molecular weight). Molecular weight (the sum of the atomic weights) for H2O equals 18 (1+1+16).

Nicola Stone
09.12.15, 15:35

in finding the number of moes of H2O where did ye get the 18??

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