Thursday, 30 April 2020

HW-2
Balancing chemical equations. 27 APR 2020

Balance the following chemical equations.
1.  Cu  +  O2                       CuO
2.  K  +  H2O                      KOH  + H2
3.  H2S  +  O2                             2H2O  + S
4.  Mg  + HCl                     MgCl2  + H2
5.  H2  +   Cl2                          HCl
6.  CH4 + O2                          CO2 + H2O
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Answer Key for HW-2
Balancing chemical equations. (27 APR 2020)
Balanced Chemical Equations.
1.  Cu  +  O2                       CuO
Answer:  2Cu + O2                       2CuO
2.  K  +  H2O                      KOH  + H2
Answer: 2K + 2H2O                      2KOH + H2
3.  H2S  +  O2                             2H2O  + S
Answer:   2H2S + O2                             2H2O + 2S
4.  Mg  + HCl                     MgCl2  + H2
Answer:  Mg + 2HCl                     MgCl2 + H2
5.  H2  +   Cl2                          HCl
Answer:  H2 +   Cl2                          2HCl
6.  CH4 + O2                          CO2 + H2O
Answer:  CH4 + 2O2                          CO2 + 2H2O

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