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What is the Formula for calculating the efficiency of a machine?
Efficiency = Output value / Input valueFor example, if a machine needs 10 KW to run and produces 8 KW, its power efficiency is 8/10 = 0.8 or 80%Efficiency is always between 0 and 1 (or 0 and 100 if expressed as a percentage.)
Is Kw equal to 1.0 x 10-14?
No. Kw is a measure of power with units [ML2T-3] whereas 1.0*10-14 is a pure, dimensionless number. There can be no equivalence because the dimensions do not match.
How much energy in kilowatt hour is consumed in operating 50w bulb for 10 hours per day iHow much energy in kilowatt hour is consumed in operating 50W for 10 hours per day in a month?
50 W * (1 kW/1000 W) * (10 hr/day) = 0.5 kW-hr/dayAssuming 30 days/mo.--> 0.5 kw-hr/day*(30 day/month) = 15 kW-hr/month
What is the number of units used by a 8 kw shower used for 30 minutes?
10
How many kw are 30 Mgw?
1 Megawatt = 1000 Kilowatts so 30 Mw = 30*1000 kw = 30,000 kw.
What is the numerical value of Kw at 298 k?
The value of Kw (ion product of water) at 298 K is approximately 1.00 x 10^-14.
At a certain temperature the pH of a neutral solution is 7.56 What is the value of Kw at that temperature?
Kw = [H+][OH-][H+] = 10-pH = 10-7.56In neutral pure water the concentration of H+ and OH- is equal.[OH-] = 10-7.56Kw = [H+][OH-] = 10-7.56 * 10-7.56 = 10-15.12
What is the pH of pure water at 313 K if Kw at that temperature is 2.917 x 10 -14?
Kw = [H+][OH-] [H+] = 10-pH = 10-6.17 For [OH-] remember that heat causes more water molecules to self-dissociate but for every new H+ generated, a OH- is generated as well. Therefore, the concentration of H+ and OH- is equal. [OH-] = 10-6.17 Kw = [H+][OH-] = 10-6.17 * 10-6.17 = 10-12.34
What is the Formula for calculating the efficiency of a machine?
Efficiency = Output value / Input valueFor example, if a machine needs 10 KW to run and produces 8 KW, its power efficiency is 8/10 = 0.8 or 80%Efficiency is always between 0 and 1 (or 0 and 100 if expressed as a percentage.)
What is the value for the ionization constant Kw for water at 25 degrees celsius?
The ionization constant Kw for water at 25 degrees Celsius is 1.0 x 10^-14.
How do you calculate power factor kvr?
Power Factor = KVA/KW. This has no unit. Its value is always 1 or less.
How is Kw valid?
Kw is the ionisation constant for water at 25°C which value is 1.0x10^-14. (chemistry)In water at any pH the equilibrium state Kw is defined by and equal to the 'ion product':Kw = [H3O+]*[OH-] = 1.0*10-14at room temperature 25°C
How do you calculate 10 mw windmill power to kw?
1 MW is 1000 kW therefore 10 MW is equal to 10,000 kW.
What is the only way to change the value of Kw?
The value of Kw, which is the equilibrium constant for the autoionization of water, can be changed by changing the temperature of the water. As temperature increases, the value of Kw also increases because the ionization of water is an endothermic process.
pH value @ 25ºC - APHA 4500-H-B 7.4 CONVERT TO ppm?
import math def ph_to_ppm(ph): """Converts a pH value to ppm. Args: ph: The pH value to convert. Returns: The pH value in ppm. """ kw = 10 ** -ph t = 25 + 273.15 ion_product = kw * math.pow(10, -(t / 12.0)) return 10 ** (-ion_product / 2) if __name__ == "main": print(ph_to_ppm(7.4))
An acid has Ka equals 3.1 x 10-10 What is the Kb for the conjugate base of this acid at 25 C?
To find the Kb of the conjugate base, you can use the relationship Kw = Ka * Kb. At 25°C, the value of Kw is 1.0 x 10^-14. Given Ka = 3.1 x 10^-10, you can solve for Kb using Kb = Kw / Ka. This gives you Kb = 1.0 x 10^-14 / 3.1 x 10^-10 = 3.23 x 10^-5.
How the concentration of hydronium in water is 10-7?
Kw value of water is 1.0*10-14 moles2/L2 at room temperature. So the H3O+ ion concentration is 10-7 moles/L.
