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Percent by (basic) mass is easy...
K2 = 39 x 2 = 78
Cr2 = 52 x 2 = 104
O7 = 16 x 7 = 112
% by mass = 112/(78+104+112) = 56/142 = 29.9465%
If you're looking for a more complex/precise derivative that includes the probabalistic mass of the electrons, etc. then it becomes much more complicated.
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∙ 16y ago
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How do you calculate EBITDA percent Margin?
EBITDA Margin = EBITDA/Sales
How do you calculate percent of income spent in one area like housing?
You could divide that number by your total income and that should determine the percent.
How to calculate commission?
multiply the money by the percent and divide the sum by the amount of people working on the deal
Calculate the simple interest on a loan with a principal of 6.000 an interest rate of 7.39 percent and a term of four years?
1,773.60
Calculate the new balance after one year on a savings account if the previous balance was 125.39 and the interest rate was 5 percent?
$131.66
What percent of potaasium dihromate K2Cr2O7 oxygen?
The percentage of potassium is 26,53 %.
He formula for potassium dichromate is KËÃCrËÃOËÈ How many grams of oxygen will be in 2 moles of potassium dichromate?
224 grams of Oxygen will be in 2 moles of Potassium dichromate.
What elements make up K2Cr2O7?
Potassium dichromate contain potassium, chromium and oxygen.
The formula potassium dichromate is K2Cr2O7. How many grams of oxygen will be in 2 moles of potassium dichromate?
In one mole of potassium dichromate, there seven moles of oxygen. This means in two moles of K2Cr2O7, there are 14 moles of O, or 7 Moles of O2, which equals 224 grams.
What is the provider of oxygen in a chemical reaction called?
such a compound is an oxidizing agent as , KMnO4 , K2Cr2O7 , K2CrO4 ,MnO2 , H2O2 etc.
What is the compound for K2Cr207?
potassium dichromate
What is the dissociation equation for K2Cr2O7?
K2Cr2O7(aq) ------> 2K+(aq)+Cr2O72-(aq)
How do you make 0.25N K2Cr2O7 solution?
1N of k2cr2o7=49.09 gm/1 L 0.25N=12.2725 gm of k2cr2o7 in 1 L of water.
What is the formula for patassium dichromate?
The chemical formula of potassium dichromate is K2Cr2O7
How many grams of potassium are in 12.5 g potassium dichromate?
potassium dichromate- K2Cr2O7 12.5 grams K2Cr2O7 *(1 mol K2Cr2O7/294 grams K2Cr2O7)= .0425 mols K2Cr2O7 There's two mols of K (potassium) for every 1 mol of K2Cr2O7 (Potassium Dichromate) so you multiply the K2Cr2O7 by two to get mols of K .0425 mols K2Cr2O7*(2 mols K/1 mol K2Cr2O7)=.085 mols K Multiply by the molar mass of K to get grams .85 mols K*(39 grams/1 mol K)= 3.32 grams potassium
How prepare 0.1 n k2cr2o7?
Weigh 4.9035g K2Cr2O7 make up to 1 liter
Does molarity and normality is same in K2Cr2O7?
No, It's totally different. 1M of K2Cr2O7 is 294.19g/water 1L on the other hands, 1N of K2Cr2O7 is 49.04 g/ water 1L
