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To prepare a 0.02 N potassium permanganate solution, you would need to dissolve 1.58 grams of potassium permanganate (KMnO4) in 1 liter of distilled water. This will give you a solution with a molarity of 0.02 N. Remember to wear appropriate personal protective equipment when handling potassium permanganate, as it can be harmful.
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What is the molar mass of uranium -238?
238 grams/mole The isotopic number is the approximate mass for any element. Such as if I say Carbon 14, the approximate mass is 14 grams/mole. If you are asking what is the mass of one atom of Uranium 238: Then you take the isotopic mass 238 grams/mole and divide by Avogadro's Number 6.022X10^23 atoms/mole this gives you units of grams/atom.
When using liquid nitrogen for shrinking steel by how much will it shrink per inch?
Liquid nitrogen can cause steel to shrink by approximately 0.001 inch per inch in size. The rapid cooling of the steel using liquid nitrogen causes a contraction in the material, resulting in a decrease in size.
What does 238 represent in uranium?
238 represents the most common isotope of uranium, uranium-238. It is a naturally occurring isotope found in uranium ores and makes up over 99% of natural uranium. It is not fissile, but can be converted into fissile plutonium-239 in nuclear reactors.
How do you find the pH of a solution of two strong acids?
A strong base is defined as one that dissociates completely in water (see the Related Questions link to the left for a list of the strong bases). That means for every mole of base added, one mole of free OH- is present in the solution. The pH of solution is defined this way:pH = -log10[H3O+]or in English, the pH is equal to the negative logarithm (in base 10) of the concentration of H3O+ in the solution (the concentration must be in units of Molarity (M), which is moles per liter).To use this, we need to know the concentration of H3O+. But to do this, first we must find the concentration of OH- and we can then use that to find the concentration of H3O+.Because a strong base dissociates completely in water, the number of moles of base added gives the number of moles of OH- present in the solution. There is one complication that you don't have to worry about with strong acids. Two strong bases have 2 OH-'s in their formula, like Ba(OH)2 and Sr(OH)2. These bases release TWICE as many moles of OH- as the number of moles of base added. I will show this in an example below, but first we need to know how to get the concentration of H3O+ from the concentration of OH-! They are related in this way:[H3O+] * [OH-] = 1.0 * 10-14Or in English, the concentration of H3O+ times the concentration of OH- is ALWAYS equal to 1*10-14 in water. So once we know the concentration of OH-, we can easily find the concentration of H3O+ this way:[H3O+] = (1.0 * 10-14) ÷ [OH-]Then we use the definition of the pH above. Here are a few examples:* If you have a solution of 0.1 M lithium hydroxide (LiOH), what is the pH? The concentration of OH- is the same as the concentration of LiOH, 0.1 M.So the concentration of H3O+ is:[H3O+] = (1 * 10-14) ÷ 0.1 = 1 * 10-13 MThe pH is then:pH = -log (1 * 10-13) = 13* If you have a solution of 1.0 M potassium hydroxide (KOH), what is the pH? Just as above, he concentration of OH- is the same as the concentration of KOH, 1.0 M.So the concentration of H3O+ is:[H3O+] = (1.0 * 10-14) ÷ 1.0 = 1.0 * 10-14 MThe pH is then:pH = -log (1.0 * 10-14) = 14* Let's try a twist. If you have a solution of 0.001 M Ba(OH)2, what is the pH?Now the concentration of OH- is twice the concentration of Ba(OH)2, so we have:[OH-] = 2 * 0.001 M = .002 MNow we proceed just as before. So the concentration of H3O+ is:[H3O+] = (1.0 * 10-14) ÷ 0.002 = 5.0 * 10-12 MThe pH is then:pH = -log (5.0 * 10-12) = 11.3 Strong acids and bases have all of the dissolved material completely ionized. The concentration of a monoprotic acid is equal to the concentration of hydrogen ions. The concentration of a monobasic alkali is equal to the concentration of hydroxide ions. The actual concentration of hydrogen ions from pure water is on the order of concentration of E-7 molar, so any concentration of a strong acid or base over E-5 molar completely swamps the comparatively tiny amount of ion from the ionization of water.One bobble point that comes up with newbies is: What is H3O+ and why do we use it.Hydrogen ions don't float around free in solution, they associate with water molecules at the Oxygen side. The slight negative charge of the polar bonds attracts the positive Hydrogen atom in a weak temporary bond that allows the ions to move from molecule to molecule. This effect is often found when Hydrogen is part of a molecule and results in things like holding DNA strands together, color separation in color chromatography, Gas Chromatograph column separations,... Hence the name: Hydrogen Bonding
What is the specific heat capacity of rubber?
The specific heat capacity of rubber typically ranges from 0.17 to 2.2 J/g°C, depending on the type of rubber.
What is greater 002 or 020?
002 is 2 and 020 is 20, so 020 is greater.
Is 0.5 less than 0.02?
No... .002 is less than .5 .002 < .5
What is the fraction of 002?
002 has no fraction. 0.02 is 1/50 0.2 is 1/5
Is 002 larger than 0005?
Yes. by how much
What is 2 thousandths less than 2.779?
2/1000 = .002 2.779 - .002 = 2.777
How do you spell 603 002?
603 002 is spelled as "six hundred three thousand two".
Which number is bigger 0.002 or 0.003?
0.003 is bigger, but not by much.
How many 3 digit numbers have the sum of their digits equal to 5?
002+002+001=005
WHAT does 800-002 mean on license plate?
All presidential vehicles have DC tag "800 002".
What is the website for St John American International School Cairo?
Cairo KM 33 Cairo-Suez Road, Patmos- Phone:002 02 29228114 / 002 010 0046 / Fax: 002 02 29228113
What moshling is number 002?
002 Chop Chop the Cheeky Chimp [Ninja] Any three Dragon Fruits
How many ten thousands in 23 397 002?
There are 23 397.002 ten thousands in 23 397 002
