Nickel has 10 valence electrons.
Answer:
Use energy sources that do not release greenhouse gases into the atmosphere.
Explanation:
If you use energy that does not release greenhouse gases such as CO2 then the heat won't be trapped in our environment, thus less chances of global warming. Option A is nonsense, B does not make sense either. C is the only valid way.
Answer:
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products must be same as the mass of reactants.
For the conservation of mass, the number of atoms of each element must be same in reactants and products. Thus we need to balance the reaction by writing appropriate stochiometric coefficients.
All the hydrocarbons burn in oxygen to form carbon dioxide and water.Thus the complete balanced equation is: