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How many moles of KCl are required to prepare 1.50 L of 5.4 M KCl?
0.28 mol KCl
3.6 mol KCl
6.9 mol KCl
8.1 mol KCl
starting with solid sodium chloride, how would you make one liter of 2.000 ppm sodium chloride solution
The electron in a hydrogen atom occupies a 6p orbital. What is the longest wavelength of light that can be emitted by this atom? Give answer in nanometres, nm
A balloon is filled with helium to a volume of 1.05 x 10^3 L on the ground, where the pressure is 745 mm Hg and the temperature is 20. °C. When the balloon ascends to a height of 2 miles
Calculate the change in entropy when 5.0g of water at 75.2 degrees Celsius is converted to ice at -5.5 degrees Celsius. During the process the pressure remains constant at 1.00 atm.
Determine Kcat for a reaction in which Vmax is 8*10-3 mol/min as well as the reaction mixture contains two micrograms of enzyme molecular weight of the enzyme is 100000 D
you have two neutral solutions. one contains the indicator methyl red which turns red in strongly acidic aqueous
After experiment 20.09 gram anodic solution contained 0.06227 gram silver nitrate at same time 0.009479 gm Cu was deposited in copper coulometer placed in series. Calculate the transport number of silver and nitrate ions
when 76.0 grams of calcium and 36.9 grams of nitrogen gas undergo a reaction that has a 90.0 yield what mass of calcium
Calculate the work done (in joules) by a chemical reaction if the volume increases from 3.1 L to 3.5 L against a constant external pressure of 3.5 atm
Neurospora is used as genetic material because A. it has short life cycle of 10 days B. the product of single meiosis can be easily analysed
what is the wavelength ,in nanometers, of light with an energy content of 1979Kj/mol. In what portion of the electromagnetic spectrum in this light
A mixture of gases contains 4.32 g of Ar, 7.88 g of BF3, and 4.86 g of N2. What is the partial pressure in atm of each component of this mixture if it is held in a 61.3-L vessel at 10.9 oC? Use R = 0.0821 L-atm/mol-K as the value of the gas consta..
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