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daser333 [38]
3 years ago
7

During chemical reactions the bonds between atoms break and new bonds form. Energy must be absorbed to break a bond, so breaking

bonds is endothermic. Making new bonds is exothermic because energy is released. When green copper carbonate decomposes, the equation is:
Chemistry
1 answer:
ss7ja [257]3 years ago
7 0

Answer:

The equation is: CuCO3(s) → CuO(s) + CO2(g)

Explanation:

Copper carbonate decomposes at high temperatures, generating the products carbon dioxide (CO2) and copper oxide (II) CuO. In this type of decomposition reaction, a substance is broken generating two different compounds.

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Answer:

AuCl

Explanation:

Given parameters:

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Unknown:

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Solution:

Empirical formula is the simplest formula of a compound. Here is the way of determining this formula.

Elements                                     Au                                             Cl

Mass                                         2.6444                                     0.476

Molar mass                                 197                                          35.5

Number of moles                  2.6444/197                                 0.476/35.5

                                                 0.013                                           0.013

Divide by the

smallest                                 0.013/0.013                                 0.013/0.013

                                                       1                                                   1

The empirical formula of the compound is AuCl

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So what do you mean ?

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