Mr. Wang works in a recycling center. Recyclable materials arrive at the center mixed. Workers use magnets to separate steel can
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The mass of NaCl produced is 0.117 g.
<h3>What is the pH?</h3>The pH of a solution is what tells us if the solution is acidic or basic. The solution is acidic if the pH of the solution is less than 7.
1) pH = - log(3.5 x 10^-5 M)
= 4.45
Thus the solution is acidic.
2) We can see that the concentration as given is the concentration of OH^-
[OH ] = 4.0 x 10^-3 M
pOH = -log (4.0 x 10^-3 M)
pOH = 2.39
pH = 14 - 2.39
pH = 11.61
The equation of the reaction is;
Number of moles of NaOH = 0.40 M * 10/1000 = 0.004 moles
Number of moles of HCl = 0.20 M * 10/1000 = 0.002 moles
We can see that HCl is the limiting reactant
Mass of NaCl produced ;
0.002 moles * 58.5 g/mol = 0.117 g
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Answer:
The new volume is 5.92 L, which is approximately 6 L
Explanation:
As the gas temperature increases, the molecules move faster and take less time to reach the walls of the container. This means that the number of crashes per unit of time will be greater. That is, there will be an increase (for an instant) in the pressure inside the container and the volume will increase.
So Charles's Law is one of the gas laws that relates the volume and temperature of a certain amount of gas at constant pressure and says that:
- If the temperature increases the volume increases
- If the temperature decreases the volume decreases
Mathematically this is expressed by:
When you want to study two different states, an initial and a final one of a gas, this law is expressed by:
In this case:
- V1: 8 L
- T1: 473 K
- V2: ?
- T2: 350 K
Replacing:
Solving:
V2=5.92 L
<u><em>The new volume is 5.92 L, which is approximately 6 L</em></u>