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Problem- A temperature rise from 27.0 degrees C to 42.0 degrees C for a 0.0487 kilogram sample of pure lead required 93.5 Joules of heat. Calculate the specific heat of lead.
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A 15.6 mL sample of a 0.387 M aqueous hydrocyanic acid solution is titrated with a 0.346 M aqueous barium hydroxide solution. What is the pH at the start of the titration, before any barium hydroxide has been added
A person ate 0.919 pound of cheese (an energy intake of 7350 kJ). Suppose that none of the energy was stored in his body. What mass (in grams) of water would he need to perspire in order to maintain his original temperature? (It takes 44.0 kJ to v..
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II), [Cu(NH3)4]^{2+}. If a standard hydrogen electrode is used as the cathode, the cell potential, Ecell, is found to be 0.059 V a..
must be dissolved in 15.0g of camphor to lower its freezing point by 2 degrees celsius? constant k of camphor = 37.7 (*C x kg)/mol
Question- A spreader stoker is used to burn coal containing 8 per cent ash. The flue gas from burning 1 lb of coal is 170 ft3. What is the maximum dust loading of PM in combustion gas in grains per cubic foot
A first-order decomposition reaction has a rate constant of .0061 yr-1. Explain how long does it take for reactant to react 12.5% of its original value
which of the end products of the Pentose Phosphate Pathway, glyceraldehydes-3-phosphate and fructose-6-phosphate, would contain the radioactive carbon? Account for the molecules that would contain the radioactive carbon AND the specific location o..
We need to make a 4% NaOH solution in ethanol. How much NaOH do we add to 50.0 mL of ethanol to make a 4% NaOH solution. Density of Ethanol=0.789 g/mL molar mass= 46.06844 g/mol and NaOH molar mass= 39.997 g/mol
3.64 g of calcium hydroxide react with excess sodium sulfate in aqueous solution to produce solid sulfate and aqueous sodium hydroxide. How many moles of calcium atoms are reacting ?
Problem- Reaction mechanism needed for reacting Guanidine Carbonate with 2,4-pentanedione using NaOAc to give the product 2-amino-4,6-dimethylpyrimidine.
How much energy (in Joules) is required to heat 14.89 g of water from 11.9 oC to 49.2 oC ? Use 4.184 J/goC as the specific heat capacity of water.
uranium is first converted to UF6, which is easily vaperized RT. The mixtture of 235UF6 and 238 UF6 gases is then subjected to many stages of effusion. Calculate how much more 235UF6 effuse than 238UF6. 235UF6 to UF6 238. 4 decimal.
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