As the density of a substance increases, the volume of a given mass of that substance__.
2 answers:
Answer : The correct option is, (C) decreases
Explanation :
As we know that the density is measured as the mass of substance divided by the volume of substance. The S.I unit of density is, kilogram per cubic meter or
Formula for density :
That means the density is directly proportional to the mass of the substance and inversely proportional to the volume of the substance.
As the volume of substance decreases, the density of a substance will be increases and volume of substance increases, the density of a substance will be decreases.
Hence, the correct option is, (C) decreases
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45 molecules of chlorine gas (Cl₂) are needed to react with 30 atoms of aluminum (Al)
The balanced equation for the reaction is given below:
2Al + 3Cl₂ —> 2AlCl₃
From the balanced equation above,
2 atoms of Al required 3 molecules of Cl₂.
With the above information, we can determine the number of molecules of Cl₂ needed to react with 30 atoms of Al. This can be obtained as follow:
From the balanced equation above,
2 atoms of Al required 3 molecules of Cl₂.
Therefore,
30 atoms of Al will require = = 45 molecules of Cl₂.
Thus, 45 molecules of chlorine gas (Cl₂) are needed to react with 30 atoms of aluminum (Al)
Learn more: brainly.com/question/24918379