摩尔计算-7 - How To Convert Between Moles Atoms and Grams 摩尔数、原子数目和质量的换算 47 -- 4:25 App IB化学 化学计算系列 Concentration Formula Calculations -化学中的浓度计算 27 -- 4:06 App IB化学 化学性质系列 Properties of Sulfur 64 -- 3:51 App IB化学 化学计算 Dilutions Chemical Ca...
Molalityis the number of moles of solute per kilogram of solvent. Because the density of water at 25°C is about 1 kilogram per liter, molality is approximately equal to molarity for dilute aqueous solutions at this temperature. This is a useful approximation, but remember that it is only an...
(Calculate moles first by n=m/Mr then use that to calculate the concentration in the 1 L solution by C=n/V, for each salt.) We can talk about what to do next after but it's likely that if you're desperate for an exact answer you'll need to read up. ...
Detonation pressures of C–H–N–O explosives at initial densities above 1.0 g/cc may be calculated by means of the simple empirical equationP=Kρ02φ,K=15.58,φ=NM1/2Q1/2, detonation velocities by the equationD=Aφ1/2(1+Bρ0), A=1.01, B=1.30.Nis the number of moles of gaseous...
Calculate the number of moles of O atoms in 13.27 g Mn(NO3)2. Hi I did this question and it seemed pretty easy but there is this online assignment I am...
empirical coefficients in equation a thermodynamic activity b1, b2, k, n coefficients in Eq. (13) c molar concentration, mol/L d density of the mixed solution, g/cm3 k parameter calculated in the Debye–Hückel theory M molar mass m molar concentration N number of moles in the...
The pH scale is logarithmic and shows the solution’s concentration of hydrogen ions inversely. More specifically, the pH of the solution is the negative logarithm to the base 10 of its hydrogen ion concentration in moles per litre. The pH scale can be traced to a series of standard solution...
128000mg of soda contains0.048moles of carbon dioxide. Find the concentration of carbon dioxide in the soda in ppm. 0.375 16.5 1.65×104 3.44×105 22. Castor oil is known to make hair grow as it contains high levels of ricinoleic acid. If45×1018g of castor oil contains75kg of ricinol...
Lastly, the molality of the solution should be calculated as 0.84 moles / 0.833 kg = 1.01 molal, not 3/4 molal as stated on the website. It is important to double check calculations and use proper equations when solving problems in chemistry. This ensures accurate results and a b...
The method is based on assessment of the enthalpy change (螖 H ) of feedstock components and reaction products, with the formation enthalpies of molecules being presented as a linear function of the number of moles of the elements C, H, N, O, and S. The results of computational study ...