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A british thermal unit (Btu) is defined as the quantity of heat required to change the temperature of 1lb of water by 1F. Assume the specific heta of water to be independent of temperature. How much heat is required to raise the temperature of the water in a 40-gal water heater from 48 to 145 F in a)Btu b)kcal c)kJ?
If I have 100.00 mL of 0.350 M latic acid already, how many grams of sodium lactate (molar mass = 112.06 g/mol) will I neeed to add to this solution to make the preceding buffer? Assume the volume does not change as the sodium lactate is added.
Calculate the amount of heat required to completely sublime 14.0 g of solid dry ice (Co2) at its sublimation temperature
If 25 mL of 0.060 M HClO4 is mixed with 50 mL of 0.060 M KOH, what will be the resulting pH?
The density of silver is 10.5g/cm3 what is the volume im cm 3 of an ingot of silver with mass 0.743 kg. If this sample of silver is a cube how long in each edge in cm
tartaric acid c4h6o6 has two acidic hydrogens. the acid is often present in wines and precipitates from solution as
a solution of .85g of a unknown organic compound in 100g ofbenzene has a freezing point of -5.16c. what is the molality
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air. (a) If the partial pressures of CO2 and H2O in exhaled air ar..
Determine the values of KM and Vmax for the decarboxylation of keto acid given the following data
500 mL of 0.22 M HCl and 500 mL of 0.20 M NaOH were added to a calorimeter. Assume both substances have a density of 1 g/mL and a specific heat capacity of 4.184 J/g°C.
A 45-g piece of ice at 0 degree C is added to a sample of water at 8 degrees C. All of the ice melts and the temperature of the water decreases to 0 degree C. How many grams of water were there in the sample
what type of energy kinetic or potential is contained in chemicals? what aspect of chemicals is changed during a
what volume of liquid benzene must be vaporized to give that average concentration in a room
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