How can describe the total number of moles of sodium
How can describe the total number of moles of sodium contained in the 1.9 g of sodium chloride and which is having 5.0 g of sodium sulfate.
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For a certain liquid mixture of equal weights of nicotine and water at the 80oC, the mass of the water-rich phase is 20 g. Identify the mass of water and the mass of nicotine in the water-proof phase.
If distribution of income of US households is approximately normal with the mean = $50k and standard deviation = $20k, determine the approximate probability that in the random sample of 100 US households, your sample mean is less than $46k?
Describe the wavelength of light emitted when a hydrogen atom undergoes a transition from the n=250 to n=200. In what region of the EM spectrum does this wavelength fall?
The temperature dependence of the vapor pressure of the solid sulfur dioxide can be approximately represented by the relationship that of liquid sulfur dioxide by log(p/Torr) = 8.3186 - 1425.7/(T/K) and log(p/Torr) = 10.5916 - 1871.2/(T/K).
A pair of fair dice is cast. Determine the probabiliy that one of numbers falling uppermost is a 5, given that two numbers falling uppermost are different?
The ball is thrown vertically upward with the initial speed of 80ft/sec. It's height after t seconds provided by h=80t-16t2. How high ball goes? When ball hits ground?
The parking lot is to be formed by fencing in the rectangular plot of land except for the enterance 12 m wide along one of the sides. Determine dimensions of lot of greatest area if 30m of fencing is to be used.
Determine the numbers of energy in kJ/mol is needed to remove the electron from the following orbital in an H atom:
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