generally melting point of mixture is always different from melting point of pure compound
lets say you have a two compounds called A and B
and you have a unknown compound called X which can be either A or B
now your target is to find unknown is really A or B right?
take some amount of X and mix it with A and B separately
out of these two mixtures one will be pure compound (because we initially assume that unknown can be either A or B)
suppose X + A is same melting with A then X is A
X +B will be less than the melting point of A or
suppose X+B is same melting point like B then X is B
X+A will be less than melting point of B
<h2>Answer:</h2>
Unbalanced equation:
SiO2 + CaC2 → Si + CaO + CO2
Balanced equation:
5SiO2 + 2CaC2 → 5Si + 2CaO + 4CO2
<h3>Explanation:</h3>
- The chemical equation needs to be balanced so that it follows the law of conservation of mass.
- A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side.
A is a model of a decomposition reaction
Answer:c
Explanation:
softwood is used in doors roofs and so on
