Answer:
Explanation:
We have the ideal gasses equation 
and the expression for the specific volume 
, that is the inverse of the density, and for definition the number of moles is equal to the mass over the molar mass, that is 
And we can relate the three equations as follows:
Replacing the expression for n, we have:
Replacing the expression for v, we have:
Now resolving for T, we have:
Now, we should convert all the quantities to the same units:
-Convert 500kPa to atm
-Convert 0.2
to 
- Convert the molar mass M of the water from 
to 
Finally we can replace the values:
Answer:
A. Repel
Explanation:
A magnet comprises of north and south poles.
When the south magnetic poles of two magnets are brought together, the magnets will repel because they are like charges and like
charges repel each other.
But when the north magnetic pole of one magnet is brought together with the South Pole of another magnet, both magnets will attract because they have different charges + and - . Positive and negative charges attract .
Answer: C.
Explanation:
The rusting of Clara's bike in which iron changes to rust is a chemical change. In a chemical change: the process is not easily reversible.
The answer to this question would be: <span>NaOH solution
Limiting reagent is the reagent that totally consumed in the reaction. To answer this question you need to know the equation for the chemical reaction. The equation would be:
</span><span>HCl + NAOH = H2O + NACl
</span>
All of the coefficient in the reaction is 1, which mean 1 HCl will react to 1 NaOH. In this question, the concentration of HCl and NaOH is same so the amount of the molecule can be reflected by the volume. NaOH has lower volume compared to HCl so it is clear that NaOH will be totally consumed in this reaction.
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