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A homogeneous solution is defined as a uniform mixture consisting of a single phase. With our vastly improved abilities to "see" smaller and smaller particles, down to the atomic level, present an argument for the proposition that all mixtures are heterogeneous. Present the argument that the ability to observe objects as small as an atom has no effect on the definitions of heterogeneous and homogeneous.
the given chemical reaction is 2nh3g n2g 3h2g. in this the equilibrium is to be-2 established in a container of 1.0
When 2.00 mL of a 5.0 ppm Cu^2+ solution was added to the above Cu^2+ sample solution, the new absorbance was found to be 0.324 AU. What was the concentration of Cu^2+ in the original 10.0 mL solution
What is the mole fraction of NaCl in this solution. what would be the vapor pressure of this solution at 45C? The vapor presssure of pure water is 23.8 torr at 25C and 71.9 torr at 45C
Complete and balance the following metallurgical reactions. Phases are optional. I don't need them balanced, I can do that. I'm just not sure what's on the other side of the arrows. a. MoO3(s) + H2(g) --> b. Cu2S(s) + O2(g) -->
The density of tungsten is 19.35 g/cm3. A sample of tungsten is placed in a graduated cylinder containing 30.0 mL of water and the water level rises to 34.0 mL. What is the mass in grams of the sample of tungsten?
calculate the number of carbon atoms in 3.8 moles of
Question- Part A- A 50.0-mL volume of 0.15 M HBr is titrated with 0.25 M KOH. Calculate the pH after the addition of 20.0mL of KOH. Part B- A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10?5) is titrated with 0.500 M HNO3. Calculate the pH after the add..
Explain a vitamin tablet was dissolved in a 500mL flask. 50mL of this solution was transferred to a 100mL flask as well as filled to the line. Explain how many mg of Fe are in the tablet if the concentration of Fe is 2.83 g/mL in the 100 mL flask
Question- Calculate the pH of a buffer solution of 0.35 M acetic acid and 0.20 M sodium acetate before and after 0.0030 moles of NaOH are added to 0.100 L of the buffer
The viscosity of H2 at 0 degrees celsius and 1 atm is 8.53 uPa s. Find the viscosity of D2 at 0 degrees celsius and 1 atm
50.0000 g of a compound showed that it contained 12.7520 g C,3.2105 g H, and 34.037 g S. The molecular weight of this compound was determined in a seperate expierment and found to be 94.19u.
A steady current was passed through molter CoSO4 until 8.85 g of metallic cobalt was produced. Calculate the number of coulombs of electricity used.
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