how to calculate hlb of surfactant?
536002
HLB= 20 [1-(S / A)] is calculated with that equation. The HLB values of some of the most frequently used surfactants are shown in Table 11.1. A specific HLB called; necessary hydrophile-lipophilic balance (RHLB) & quot; is required for the oil phase of an oil in water (o/w) type emulsion.
188402
['Mass per unit volume. ... ', 'Percent by mass. ... ', 'Percent by volume. ... ', 'Molarity. ... ', 'Normality. ... ', 'Molality. ... ', 'Parts per million (ppm). ... ', 'Parts per billion (ppb) This works like above, but we multiply by one billion (109:']
1133789
['Lbs/day = MGD x (ppm or mg/L) x 8.34 lbs/gal. % purity.', 'GPD = MGD x (ppm or mg/L) x 8.34 lbs/gal. (% purity) x lbs/gal.', 'GPD = MGD x (ppm or mg/L) x 8.34 lbs/gal.', 'ppm or mg/l = lbs/day. or.']
322591
['Take the mass of the hydrate and subtract the mass of the anhydrate to get the mass of water. ... ', 'Divide the mass of water by the molar mass of water to get moles of water. ... ', 'Divide the mass of anhydrate by the molar mass of anhydrate to get moles of anhydrate.']
217220
* Hold the tube, take a deep breath and blow until there is no air left in your lungs. * Measure how much air is in the bottle (count the marks). To calculate your lung capacity multiply the number of marks by 250 and then divide by 1000. It's a good idea to try this 3 times and work out the average from your results.
364483
The equation for calculating Molarity from the moles and volume is very simple. Just divide moles of solute by volume of solution.
553744
Take the reciprocal of the molar mass (1/18.01528 mol/g) and multiply by 1000g (equivalent of 1kg). This will give you the number of moles in 1 liter of water. Finally, multiply this number of moles by Avogadro's number (6.022 E23 molecules/mol) to find the number of water molecules in the liter of water.
964079
Converting from volume (liters) to moles: Divide your initial volume by the molar volume constant, 22.4 L. Converting from moles to volume (liters): Multiply your mole value by the molar volume constant, 22.4L.
74999
['Fill a beaker or graduated cylinder with enough water to completely immerse the sphere in.', 'Record the baseline initial measurement.', 'Drop the sphere in.', 'Record final measurement.', 'Subtract the initial volume from the final volume ~ this is the volume of the sphere!']
233802
Calculate the number of moles of base you add to determine the molar heat of neutralization, expressed using the equation ΔH = Q ÷ n, where "n" is the number of moles. For example, suppose you add 25 mL of 1.0 M NaOH to your HCl to produce a heat of neutralization of 447.78 Joules.
1097257
To find the weight of water, start by finding the density(1 kg/L at 39.2°) and the volume of water. Convert the volume of water to liters and then multiply by the density to find the weight.
1472327
['1 psi = 1 lbf/in2. 2 psi = 2 lbf/in2.', '3 psi = 3 lbf/in2. 4 psi = 4 lbf/in2.', '5 psi = 5 lbf/in2. 6 psi = 6 lbf/in2.', '7 psi = 7 lbf/in2. 8 psi = 8 lbf/in2.', '9 psi = 9 lbf/in2. 10 psi = 10 lbf/in2.', '11 psi = 11 lbf/in2. 12 psi = 12 lbf/in2.', '13 psi = 13 lbf/in2. 14 psi = 14 lbf/in2.', '15 psi = 15 lbf/in2. 16 psi = 16 lbf/in2.']
634781
The pounds of MLVSS are calculated by multiplying the concentration (mg/l) of MLVSS by the volume of the aeration tanks in million gallons (MG) by the weight constant of 8.34 pounds per gallon of wastewater (Equation I. 2). = 8 34 .
1194672
The magnitude of the buoyant force is equal to the the magnitude of the weight wliquid of the displaced liquid. wliquid = ρliquidVg. The volume V of the displaced liquid is the volume of one half sphere, V = 2πr3/3 = 2π(6cm)3/3 = 452cm3.
298960
['Write the equation used to calculate the weight/volume (%) : weight/volume (%) = (mass solute ÷ volume of solution) × 100.', 'Identify the solute: solute = sodium chloride = NaCl.', 'Extract the data from the question: mass solute (NaCl) = 5 g.']
1126073
Find the volume of your tank. To determine the volume of a rectangular tank, multiply the length (l) times the width (w) times the height (h). The width is the horizontal distance from side to side.
1183684
Under this formula, the relationship between the lower heating value of a fuel and the higher heating value of that fuel is: LHV = HHV – 10.55(W + 9H) Where: LHV = lower heating value of fuel in Btu/lb, HHV = higher heating value of fuel in Btu/lb, W = Weight % of moisture in fuel, and H = Weight % of hydrogen in fuel.