How many moles of solid produced in this decomposition reaction

Chemistry
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Given that mass was lost from the copper (II) carbonate hydroxide hydrate during heating, in this decomposition reaction, how many moles of solid product were produced? The molar mass of the solid product is 79.545 g/mol (number of moles = mass (g) / molar mass (g/mol)).

Empty crucible  88.000g, Crucible and copper carbonate hydroxide hydrate 93.000g, after heating it was 91.327 grams

Oct 17th, 2015

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copper (II) carbonate hydroxide hydrate mass was 5 g..(93.000g-88.000g)

copper (II) carbonate hydroxide hydrate heated releases water vapor, and deposits a black powder of copper ii oxide   Cu2CO3(OH)2.H2O(aq) = 2CuO(s) + CO2(g) + 2H2O(g)

Mollar mass of copper ii oxide is 79.545 g/mol

No of CuO grams remained= 93.000-91.327=1.673g

1 mole CuO has 79.545g

? moles will equal 1.673g

=0.021 moles



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Oct 17th, 2015

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