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The distance between layers in a crystal is 321 pm. X rays are diffracted from these layers at an angle of 45.6°. Assuming that n = 4, calculate the wavelength of the X rays in nm.
Determining a Four Stroke Engine's Dimensions Based on its Power, The engine produces indicated power of 35 HP. While it is running at 2500 RPM. Find the dimension of the engine.
what is the maximum wavelength of light that can be used to observe the photoelectric effect? answer in nm.
how can we calculate the weight of CaCO3 per 10^6 ml unknown sample.the weight of CaCO3 per 25 ml of unknown sample is 5.71*10^-3
isopentyl alcohol with an excess of acetic acid, how many gras of isopentyl acetate( MW =130.2 g/mol) would you hav if the yield was 75%?
The volume of a sample of gas, initially at 25oC, increase from 158 ml to 450 ml. What is the final temperature (C) if the pressure in the container is kept constant.
below, 8.34 atm each of H2 and Br2 were placed into a 1.00 L flask and allowed to react: H2(g) + Br2(g) 2 HBr(g) Given that Kc = 86.7, calculate the equilibrium pressure of Br2.
Draw the lewis structures for NO2Cl and NO3Cl include lone pairs of electrons, resonance structures, and formal charges (minimized)
The two molecules have the same molecular geometry but different electron pair geometries. The two molecules have different electron pair geometries. The two molecules have the same electron pair geometry but different molecular geometries.
If a 2.1 L reaction vessel initially contains 723 torr of cyclopropane at 485 degrees C , how long will it take for the partial pressure of cylclopropane to drop to below 105 torr ?
Calculate the pressure in the mindanao trench. depth = 11.5 km and the average mass density of sea water
The combustion of ethene, C2H4 , occurs via the reaction C2H4 (g) + 3O2(g) ===> 2CO2(g) + 2H2O(g) with heat of formation values given by the following table
Metals and nonmetals can react with each other to form ions. Complete these statements. A potassium atom gain or loses(electrons/protons/neutrons)and to form how many ion?
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