The characteristics of mixtures are:
a) they are made up of two of more substances
b) the two substances can be separated by physical means
c) there are two kinds of mixtures : homogenous and heterogenous
d) homogenous mixtures do not have any physicaly distinguished boundary
Answer: Option A) the total energy of the universe is constant.
Explanation:
The first law of thermodynamics is also known as the law of conservation of mass.
And it states that matter is neither created nor destroyed during a chemical reaction but changes from one form to another.
Thus, the total energy of the universe is constant (neither created nor destroyed).
Answer:
The molecular shape of hydrogen sulfide is bent (H2s)
Explanation:
Only the Fe is unbalanced.
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