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In column chromotography, after adding ethanol, all of the methylene blue was washed away and after adding sodium hydroxide, all of the sodium fluorescine was washed away. Why did this happen?
Suppose that at a particular moment during the reaction, molecular hydrogen is reacting at the rate of -0.555 M/s. (a) At what rate is ammonia being formed?
The heat of combustion of bituminous coal is 2.5 × 104 J/g. What quantity of the coal is required to produce the energy to convert 100. lb of ice at 0°C to steam at 100°C
The water level in a graduated cylinder was at 211 rises initially it raised to 270 after adding a piece of lead is submerged. Determine the mass in grams of the lead?
Which compound ranks #1 in terms of pounds produced annually in the United States. sodium hydroxide, ammonia
You need to prepare 20ml of a drug dilution of 50mg/ml from a stock solution of 2g/5ml. How many mls of diluent will be added. Can you please right it out for me, I'm not sure how to set this up.
Suppose a 500 mL solution contains 0.50 millimoles of Co(NO3)2, 100.0 millimoles of NH3, and 175.0 millimoles of ethylenediamine. What is the concentration of Co 2+ (aq) in the solution?
How does nuclear magnetic resonance imaging allow us to see inside human bodies? In what other ways do you think this technology could be used
phosphoric acid can be prepared by reaction of sulfuric acid with phosphate rock according to the equation ca3po42
What is the empirical formula of the comound composed of 42.580% carbon, 7.147% hydrogen, and 50.273% chlorine
What is the concentration of Cu2+ in the following cell at 25 degrees C if the cell voltage is 0.955V?
Find the Fourier transform of the function exp(-πx2/ σ2). Explain how the width and height of the bands are inversely related in the two domains. Why should this be so
A student sets up two reactions. Reaction 1 uses 0.170 mole/L of reactant, and Reaction 2 uses 0.460 mole/L of reactant. How many times faster is Reaction 2 compared to Reaction 1
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