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garik1379 [7]
2 years ago
7

What type of chemical reaction is demonstrated by this equation? A+BX-AX+B

Chemistry
2 answers:
Nezavi [6.7K]2 years ago
8 0

Answer:

single replacement

Explanation:Look it up and got it from quizlet it should be right.

BlackZzzverrR [31]2 years ago
3 0

Answer:

d an acid - base reaction.

Explanation:

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ANSWER
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Calculate the DH°rxn for the decomposition of calcium carbonate to calcium oxide and carbon dioxide. DH°f means delta or change
USPshnik [31]

Answer: +178.3 kJ

Explanation:

The chemical equation  follows:

CaCO_3(s)\rightarrow CaO(s)+CO_2(g)

The equation for the enthalpy change of the above reaction is:

\Delta H^o_{rxn}=[(1\times \Delta H^o_f_{(CaO(s))})+(1\times \Delta H^0f_{CO_2}]-[(1\times \Delta H^o_f_{(CaCO_3(s))})]

We are given:

\Delta H^o_f_{(CaO(s))}=-635.1kJ/mol\\\Delta H^o_f_{(CaCO_3(s))}=-1206.9kJ/mol\\\Delta H^o_f_{(CO_2(g))}=-393.5kJ/mol\\\Delta H^o_{rxn}=?

Putting values in above equation, we get:

\Delta H^o_{rxn}=[(1\times (-635.1))+(1\times (-393.5))]-[(1\times (-1206.9))]

The DH°rxn for the decomposition of calcium carbonate to calcium oxide and carbon dioxide is +178.3 kJ

5 0
2 years ago
9.25 * 10^21 pennies if how many moles
Brrunno [24]
According  to  Avogadro constant   1  mole  =  6.02  x   10^23    what  about   9.25  x10  ^21

that  is    1  mole  x   (  9.25  x10  ^21)  /  (6.02 x10^23)  =  0.0154  moles
8 0
3 years ago
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