Your answer is B.
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Answer:
The liquid Iodine may bubble as you boil it.
Explanation:
Answer:
1360.0 g/mol
Explanation:
If there is one atom of cobalt in every molecule of cyanocobalamin its chemical formula must be
CoX₂, so there is 1 mol of cobalt for 1 mol of the compound. The molar mass of the cobalt is 59 g/mol. So, there is 59 g of cobalt in 1 mol of the cyanocobalamin and it represents 4.34% of the total mass, so:
0.0434m = 59
m = 1359.45 g of cyanocobalamin
The molar mass of the molecule is the mass divided by the number of moles (which is 1), so it is:
M = 1359.45 g/mol = 1360.0 g/mol
Explanation:
Whenever there occurs a decrease in the density of a substance then this is known as rarefaction.
For example, when particles of a gas become more dispersed or spread out then it means they have gained more kinetic energy. As a result, there will occur a decrease in mass of the gas and increase in volume of the gas.
As density is mass divided by volume. Hence, decrease in mass will also lead to a decrease in density of the gas.
Therefore, we can conclude that when the molecules in the air become less dense (as in the process of hearing), rarefaction has occurred.
