Answer:
P=atm
Explanation:
The problem give you the Van Der Waals equation:
First we are going to solve for P:
Then you should know all the units of each term of the equation, that is:
where atm=atmosphere, L=litters, K=kelvin
Now, you should replace the units in the equation for each value:
Then you should multiply and eliminate the same units which they are dividing each other (Please see the photo below), so you have:
Then operate the fraction subtraction:
P=
And finally you can find the answer:
P=atm
Now solving for b:
Replacing units:
Multiplying and dividing units,(please see the second photo below), we have:
Answer is: <span>the acidity of water reduce the mass of seashells.
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Balanced chemical reaction:
CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + CO₂(g) + H₂O(l).
Calcium carbonate (CaCO₃) dissolves in hydrochloric acid and gas carbon(IV) oxide is formed.
Calcium carbonate is inorganic salt insoluble in water, but soluble in acidic solutions.
Answer:
A) A solid salt dissolves in water.
Explanation:
A solid, like a salt, dissociates into ions as it dissolves in liquid. The particles (ions) become more spaced apart and with greater randomness. This is increasing entropy.
As the temperature of the system increases, the energy of the system also increases, speeding the system up.
Marketa bought 2.7 pounds of walnuts for $25.54. Approximately. pounds of walnuts can Marketa purchase for $1 is 0.11 pounds.
the given data as follows :
Marketa bought = 2.7 pound of walnuts
cost for the 2.7 pound of walnuts = $25.54
walnut Marketa can purchase for $ 1 = ?
$25.54 = 2.7 pound of walnuts
for $ 1 = 2.7 / 25.54 = 0.11 pounds of walnuts
therefore , Marketa can purchase 0.11 pound of walnuts for $1
Thus, Marketa bought 2.7 pounds of walnuts for $25.54. Approximately. pounds of walnuts can Marketa purchase for $1 is 0.11 pounds.
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