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What weight of pure H2SO4 is present in each liter of concentrated sulfuric acid whose density is 1.86 g/ml and which contains 98% by weight H2SO4?
Say you are presented with two beakers, beaker A and beaker B, each containing a white, powdery compound. a. From your initial observations, you suspect that the two beakers contain the same compound.
In an experiment, 0.30 mol H2 and 0.30 mol I2 are mixed into a 1.00-l container, and the reaction forms HI. If Kc =49. for this reaction, what is the equalibrium concentration of HI. I2(g) + H2(g) 2HI(g)
A 21.70mL volume of 0.0940 M NaOH is required to reach the phenolphthalein endpoint in the titration of a 3.06g sample of vinegar. calculate the number of moles of acetic acid in the vinegar sample.
How much energy (in kilojoules) is released when 14.0 g of steam at 129.0^C is condensed to give liquid water at 78.0C? The heat of vaporization of liquid water is 40.67 kJ/mol, and the molar heat capacity is 75.3J/ K mol for the liquid and 33.6 J..
You weighed out 204 mg of maleic anhydride. Which volume of 2,3-dimethylbutadiene will you need to add? The answer should be in mL with three digits after the decimal point.
During a strenous workout, an athlete generates 1890.0 kj of heat energy. What mass of water would have to evaporate from the athlete's skin to dissipate this much heat?
1. nitric oxide is made from the oxidation of ammonia. what mass of nitric oxide can be made from the reaction of 8.00
what mass of this substance must evaporate in order to freeze 230g of water initially at 16 degrees? the heat of fusion
It takes 45.0 to raise the temperature of an 8.00 piece of unknown metal from 13.0 to 24.5. What is the specific heat for the metal.
A 12-gram mixture of methane, CH4, and ethane, C2H6, is completely combusted in oxygen. If the total mass of H2O produced is 22.0 grams, what was the approximate mass of the methane in the original mixture?
a 2.00 kg sample of pure water at 20.0 degree celsius absorbs 3.53 kJ of heat. What is the final temperature of the water?
robots are used to auto industries to weld to components at specific locations. clearly the end position of the arm
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