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The heat of vaporization of water at 100*c is 40.66 kj/mol. calculate the quantity of heat that is absorbed/released when 9.00 g of steam condenses to liquid water at 100*c
The heat of combustion of bituminous coal is 2.5 × 104 J/g. What quantity of the coal is required to produce the energy to convert 100. lb of ice at 0°C to steam at 100°C
The half-life of a certain radioactive element is 1,250 years. What percent of the atoms remain after 7,500 years?
determine the number of carbon atoms in the compound. Natural abundances: 12C is 98.93% and 13C is 1.07%
How much heat would be given off per mole of NaOH if 4.6g of NaOH dissolves to give off 755J of heat? b)How many grams of NaOH are needed to produce 88 kJ of heat? Please explain the steps to get the answer
suppose 532 ml of neon gas at 20c and 1.04 atmospheres and 376 ml of sf6 gas at 20c and 0.97 atmospheres are put into a
The compound has a molecular mass of 70. D) The compound contains a cyano or alkyne group. E) The compound contains a CO group
the average ph of precipitation in rural areas is 7.00. assuming that the phnbspis controlled by the carbonate system
What would be the effect of increasing the temperature on the following reaction? C2H2(g) + H2O(g) CH3CHO(g) DHrxn = -15 1 kJ 1. [CH3CHO] would increase 2. [CH3CHO] would decrease 3. [CH3CHO] would stay the same
Calculate the amount of heat needed to convert 96 g of ice at -24C to water at 28C. The specific heat capacity of H2O(s) is 2.1J/g*C.
Explain the order of elution you would observe while performing gas chromatography during an elimination/dehydration process on 2-butanol.
what is the energy of the light emitted in joules when an electron falls from the n=4 to the n=2 orbit in the hydrogen atom ? (E2= -328 kJ/mol , E1= -82 kJ/mol)
A SEM can be used to map the elemental composition of the material in the sample. How is this possible
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