Answer:
![m_{Ga}=0.550gGa](https://tex.z-dn.net/?f=m_%7BGa%7D%3D0.550gGa)
Explanation:
Hello!
In this case, since the applied current for the 50.0 mins provides the following charge to the system:
![q=0.760\frac{C}{s}*50.0min*\frac{60s}{1min}=2,280C](https://tex.z-dn.net/?f=q%3D0.760%5Cfrac%7BC%7D%7Bs%7D%2A50.0min%2A%5Cfrac%7B60s%7D%7B1min%7D%3D2%2C280C)
As 1 mole of electrons carries a charge of 1 faraday, or 96,485 coulombs, we can compute the moles of electrons involved during the reduction:
![n_{e^-}=2,280C*\frac{1mole^-}{96,485C}=0.0236mole^-](https://tex.z-dn.net/?f=n_%7Be%5E-%7D%3D2%2C280C%2A%5Cfrac%7B1mole%5E-%7D%7B96%2C485C%7D%3D0.0236mole%5E-)
Then the reduction of Ga³⁺ to Ga involves the transference of three electrons, we are able to compute the moles and therefore the mass of deposited gallium:
![m_{Ga}=0.0236mole^-*\frac{1molGa}{3mole^-}*\frac{69.72gGa}{1molGa} \\\\m_{Ga}=0.550gGa](https://tex.z-dn.net/?f=m_%7BGa%7D%3D0.0236mole%5E-%2A%5Cfrac%7B1molGa%7D%7B3mole%5E-%7D%2A%5Cfrac%7B69.72gGa%7D%7B1molGa%7D%20%20%5C%5C%5C%5Cm_%7BGa%7D%3D0.550gGa)
Best regards!
The new concentration of the solution that has 400.0 mL of a 0.425 M solution of NaCl diluted to 900.0 mL is 0.189M
HOW TO CALCULATE CONCENTRATION:
- The concentration of a diluted solution can be calculated using the following formula:
C1V1 = C2V2
Where;
- C1 = initial concentration
- C2 = final concentration
- V1 = initial volume
- V2 = final volume
- According to this question, a solution of NaCl has 400.0 mL of a 0.425 M solution and diluted to 900.0 mL. The new concentration is as follows:
400 × 0.425 = 900 × C2
170 = 900C2
C2 = 170 ÷ 900
C2 = 0.189M
- Therefore, the new concentration of the solution that has 400.0 mL of a 0.425 M solution of NaCl diluted to 900.0 mL is 0.189M.
Learn more at: brainly.com/question/8795644?referrer=searchResults
Which Paper towel absorbs the most water?
I believe the paper towel with the thickest material will absorb the most water, because it can hold more water with the more paper.
You can try out 3 brands of paper towels, then you can put all of them (different times) in containers with water for a certain amount of time. Ex. 10 seconds, then take them out and squeeze out the water into a measuring cup to see how much the paper towel absorbed. Do that for all the brands and repeat it 3 times for your trails to get accurate results.