Question: Potassium Nitrate, KNO,, Has A Molar Mass Of 101.1 G/mol. In A Constant Pressure Calorimeter, 27.9 G Of KNO, Is Dissolved In 299 G Of Water At 23.00 °C. KNO,(s) Kaq) + NO, (n) The Temperature Of The Resulting Solution Decreases To 19.70 °C.
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Problem #4: Metallic potassium has a body-centered cubic structure. If the edge length of unit cell is 533 pm, calculate the radius of potassium atom. (This is the reverse of problem #3.) Solution: 1) Solve the Pythagorean Theorem for r (with d = the edge length): d 2 + (d 2) 2 = (4r) 2. d 2 + 2d 2 = 16r 2. 3d 2 = 16r 2. r 2 = 3d 2 / 16 r = (d 3) / 4. 2) Solve the problem:
Potassium Chloride KCl Molar Mass, Molecular Weight. • NH4Cl + KOH = NH3 + H2O + KCl
molar masses . K = 39.098. Al = 26.98. 2 S @ 32.056 each. 8 O's @ 16.00 each. 12 H2O's @ 18.01 each . total 474.33 g/mol. http://en.wikipedia.org/wiki/Potassium_alum

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Problem #4: Metallic potassium has a body-centered cubic structure. If the edge length of unit cell is 533 pm, calculate the radius of potassium atom. (This is the reverse of problem #3.) Solution: 1) Solve the Pythagorean Theorem for r (with d = the edge length): d 2 + (d 2) 2 = (4r) 2. d 2 + 2d 2 = 16r 2. 3d 2 = 16r 2. r 2 = 3d 2 / 16 r = (d 3) / 4. 2) Solve the problem:
Number of Moles Calculator The number of moles can easily be calculated when you know the weight and atomic mass of the element which you're calculating. Formula to calculate number of moles = weight/atomic mass of the element For Example: Calculate the number of moles in 80 grams of calcium solution. Find the number of moles.
molar masses . K = 39.098. Al = 26.98. 2 S @ 32.056 each. 8 O's @ 16.00 each. 12 H2O's @ 18.01 each . total 474.33 g/mol. http://en.wikipedia.org/wiki/Potassium_alum

# Molar mass of potassium

Jan 15, 2017 · And actually it doesn't have a molar mass, as molar mass is a property of a compound - something with well defined molecular formula. Mixture doesn't have a formula, it contains separate compounds, each one having a separate formula. However, when we are dealing with gases each mixture of them can be described by an equivalent molar mass. Potassium Chloride (KCl) Potassium Fluoride (PF) Potassium Iodide (KI) Interesting facts: It was the first metal to be isolated using electrolysis. It catches fire when exposed to water. It burns with a violet flame. It is found in all living plant and animal cells.