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Silicon has a band gap of 1.1 eV at room temperature.What wavelength of light would a photon of this energy correspond to?
in a .1000 M NaOH solution, 20.76 mL of the NaOH solution were required t neturalize completely 13.15 mL of the malonic acid solution; what is the molarity of the malonic solution?
A gas occupying a volume of 1.50 L exerts a pressure of 700 mmHg at 200 degrees C. Which mathematical expression gives the correct pressure at 6.00 L and 400 degrees C?
Otane has a density of 0.692 g/mL at 20°C. How many grams of O2 are required to burn 5.95 gal of C8H18?
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 26.50 mL of 0.0502 M NaOH but overshoot the end point, and the solution turns deep pink.
the specific heat capacity of zinc is 0.389J/Kg, and that of water near 100 degrees celsius is 4.22J/Kg. Calculate the final temperature reached ny the zinc and water
A mixture consists of 323 mg of methane, 165 mg of argon, and 223 mg of nitrogen. The partial pressure of nitrogen at 275 k is 19 kPa.
What is the percentage purity of your ldh column fraction? 2. How many total mg of ldh are there in your column fraction?
A 2 cm string is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave? How many nodes does it contain?
The Party Guy, Mr. Balloon, is making animal figures out of long thin balloons that he twists into different shapes. Assume that the balloons are of uniform thickness.
A thief plans to steal a gold sphere with a radius of 30.0 cm from a museum. If the gold has a density of 19.3 g/cm^3, what is the mass of the sphere?
How much difluoroacetic acid (d = 1.526g/cm^3 MW = 96.033) should be transferred to a 500 mL volumetric flask that's half full of water to generate
Compute the number of moles of H2O will be formed from the reaction 75.1g benzene?
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