<span>50 quarts of 60% solution and 50 quarts of 40% solution.
You want a total of 100 quarts, so we'll use the following expressions
x = amount of 60% solution
(100 - x) = amount of 40% solution.
The total amount of alcohol will be
0.6x + 0.4(100-x)
We want the final result to be 100 quarts of 50% solution, so we express that as
0.5 * 100
Now we set them equal to each other, and solve for x
0.6x + 0.4(100-x) = 0.5 * 100
Distribute the .4
0.6x + 0.4*100 - 0.4x = 0.5 * 100
0.6x + 40 - 0.4x = 50
Subtract 40 from both sides and combine the x terms
0.2x = 10
Divide both sides by 0.2
x = 50
Now we know we need 50 quarts of the 60% solution. And we need (100 - 50) = 50 quarts of the 40% solution as well.</span>
Answer: The new pressure will be 1.42 atm
Explanation:
To calculate the final pressure of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
where,
are the initial pressure and temperature of the gas.
are the final pressure and temperature of the gas.
We are given:
Putting values in above equation, we get:
Hence, the new pressure will be 1.42 atm
Explanation:
The driving force behind plate tectonics is convection in the mantle. Hot material near the Earth's core rises, and colder mantle rock sinks.
Answer is: Both a fluorine atom and a bromine atom gain one electron, and both atoms become stable.
Fluorine and bromine are in group 17 in Periodic table of elements. Group 17 (halogens) elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.
Halogens need to gain one electron to have electron cofiguration like next to it noble gas.
Fluorine has atomic number 9, it means it has 9 protons and 9 electrons.
Fluorine tends to have eight electrons in outer shell like neon (noble gas) and gains one electron in chemical reaction.
Electron configuration of fluorine: ₉F 1s² 2s² 2p⁵.
Electron configuration of neon: ₁₀Ne 1s² 2s² 2p⁶.
