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How many grams of H2O can be cooled from 45 degrees C to 15 degrees C by the evaporation of 63 grams of water. The heat of vaporization is 2.4 KJ/gram and the Specific Heat of water is 4.18 J/gK?
Using a sample of ferrous ammonium sulfate hexahydrate of 0.5585 grams needs KMnO 4 solution of 21.45 ml to reach a pink endpoint then calculate what will be tha molarity of the KMnO 4 solution?
Solar furnaces are designed to focus sunlight (say, with a parabolic mirror ) onto a relatively small area. given that the surface temperature of the sun is about 600K.
Determine How many mg of a 298 mg sample remains unreacted after twenty three days if 32P decompose by a first-order mechanism, half-life = 14.3 days.
"The chains of several cell membrane - bound proteins are known to wind back and forth through the cell membrane, such that some parts of the protein structure are extracellular, some parts are intracellular, and some parts lie within the cell mem..
Application of ideal gas law - How high can you raise the temperature of the gas without bursting the vessel?
Some observations through an experiment shows that a gas sample of 115 mili litres has a mass of 0.170 grams at a pressure of 711mmHg and a temperature of 34 degree celsius. Determine the molar mass of the gas.
What is the temperature change If 84 joules of heat are added to a pure gold coin with a mass of fifteen grams? It is given that the Specific heat capacity of Au= 0.128
Determine the pH of the solution resulting from the combination of 40.0 mL of 0.200 M Perchloric acid and what is the mass in mg
Calculate how many such photons are emitted per second by a 80.0-W incandescent lightbulb if we Assume that the light has an average wavelength = 510.0 nm, .
These 3 solutions including 2.362 g of Rb2S, 1.635 g of NaClO 4 , and 0.796 g of CuCl 2 , respectively are combined together? now calculate what would be the mass of this precipitae?
Determine what ventilation rate (minimum) in m3/hr will be essential to keep the carbon monoxide concentration in his garage from the dangerous level of 1600 ppmv? What is your answer in this case?
If solar radiation is 1010 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation.
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