To calculate the number of moles of a compound you have on hand, you divide the mass by the mass of one mole of the compound, which you can calculate from the periodic table.Using the Mole Fraction Equation The mole fraction formula is particularly easy to understand and use if you ...
2. Calculate the heat. Given that delta H = -91 kJ 3. Calculate K my solution : 3H2 + N2 ---> 2NH3 I 3 9 C -3x -x +2x E 3-3x 9-x 2x then 2x/(2x+12−3x−x) = 1/2 then x = 2 but it's impossible because moles of H2 after equilibrium will be -3 so what's...
the mole fraction of the solvent = moles of solvent / total moles. Besides, in some cases, the mole number is not given directly. So, you have to find it using the chemical formula of the compounds their weight or their volumes.
Here is the equation to use when calculating w/v percent for a solution: w/v%=massingofsolutevolumeinmLoftotalsolution×100%Making Solutions of a Given Concentration So then, if you were asked to make 100 mL of a 17% w/v solution of sodium azide, how would you do this? You can make...
Re: How to calculate the number of moles of Fe2+ produced in the reaction? « Reply #3 on: October 11, 2009, 09:37:05 AM » Sorry about the equation. it was supposed to be 5Fe2+ (aq) + MnO4- Mn2+ + 4H2O (l) + 5Fe3+ (aq) Typo error. Quote No, you have it reverse...
Homework Statement Gas is contained in an 7.71 liter vessel at a temperature of 18.6oC and a pressure of 8.35 atm. Determine the number of moles of gas in...
The main focus is on determining Q, W, ΔU, and ΔH for each process using equations such as PV=nRT and the ideal gas law. The conversation also mentions the need for more information, such as the initial temperature or number of moles, in order to fully calculate the...
How to Calculate the Stoichiometric Ratio. Stoichiometry is a type of math associated with chemistry. In stoichiometry, you perform calculations pertaining to moles (the basic unit of weight in chemistry), masses and percentages. A stoichiometric ratio s
We can use this method to calculate the theoretical yield of hydrogen and oxygen that is used to produce H2O. The first step is to set up a balanced chemical equation: 2H2+O2→2H2O The second step is to find the molar mass of the reactants and the products: Molar mass of H2 = 2.0...
H2O = 2 + 16 = 18 g/mol (look at the subscript to note there are 2 hydrogen atoms) Use this value to convert the total number of grams of water into moles: (1 mol / 18 g ) * 100 g = 5.56 moles of water Now you have the information needed to calculate mole fraction. ...