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The retina of the human eye can detect light when radiant energy incident on it (typo??) is at least 4.0x10^-17 J for light of 585 nm wavelength, how many photons does this energy correspond to?
supposed 175 mmol of NH3 and 131 mmol of O2 are added to an empty flask how mych NH3 will be in the flask at equilibrium.
How would a student make 500.0 mL of a 0.07000 M solution of iron (III) using a stock solution that is 0.2550 M in iron (III)? Explain how this would be done.
An unknown mass of each of the following substances, initially at 23.0 °C, absorbs 1930 J of heat. The final temperature is recorded as indicated. Find the mass of each substance. Part B: sand (Tf= 62).
Consider a macroscopic object of mass 1 g moving with speed 1 cm/s in a 1-D box of length 1 cm. Assuming it obeys the laws of quantum mechanics, which quantum level (n) is the particle in
A mailman needs to start at the office A and visit all locations B, C and D and then back to A. How do I write an algorithm/pseudo code using the brute force method to find the best route.
a steam turbine operates between 500 degrees C and 3.5 MPa to 200 degrees C and 0.3 MPa . if the turbine generates 750 kW and the heat loss is 100 kW, what is the flow rate of the steam through the turbine
Suggest an experimental practice that could be used to synthesize 1,2-dimethylcyclopentene from 1,2-dimethylcyclopentanol.
Question- Explain what is accomplished by superconducting magnet, shim circuitry, Rf generator, and receiver of an NMR spectrometer
Define what is the annual chemical cost of treaing 0.050 m3/s of this water? Suppose the lime is 90% pure and the soda ash is 97% pure. The ion concentrations reported below are all mg/L as CaCO3
We can digest amylase and amylopectin, but not really cellulose. Specifically why can we not digest the cellulose
If 3.55 g of CuSO4 are dissolved in 925 mL of 0.30 M NH3, what are the concentrations of Cu2+, Cu(NH3)42+, and NH3 at equilibrium Kf, Cu(NH3)42+= 1.1 x 1013 . Assume that most of the Cu2+ is converted to the complex since K is a very large number...
Why is it necessary to add sodium chloride to the steam distillate before carrying out ether extraction
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