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A piece of metal weighing 10.0g is raised in tempreture from 25 C to 76.5C. it is found that it absorbed 47.6 calories of heat in the process. Calculate the specific heat (S.H.) of metal. SHOW work and proper munits
A person ate 0.451 pound of cheese (an energy intake of 3610 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..
Consider the reaction NO + O3 → NO2 + O2 Which has a rate constant given by k = 1.8×10-12 e-1370/T cm3 molecules-1 s-1
The total pressure in a flask containing air and ethanol at 257C is 878 mm Hg. The pressure of the air in the flask at 257C is 762 mm Hg. If the flask is immersed in a water bath at 350C
Determine the molarity of a solution made by dissolving 20.0 g of NaOH in sufficient water to yield 436 mL of solution.
If a sample of 6.022 g of CH4 is enclosed in a 30 L container at 402 K. What is its pressure in atmospheres?The volume is reduced to 12 L at constant temperature. What is the new pressure in atmospheres.
what is moisture content of exhaust? iii) power generated by turbine? iv) at what rate would entropy be generated within turbine? v) assuming the temp of the surroundings T(sigma)=300K what is lost work in kJ/kg of steam?
Using calorimetry experiment, how many grams of CaCl are required to cause a burn at 60 degrees celsius in 1000mL of water?
A mixture of CS2(g) and excess O2(g) is placed in a 1.00 L reaction vessel at 100.0 degrees celcius and a pressure of 3.00 atm. A spark causesthe CS2 to ignite
Lactic acid has one acidic hydrogen atom in its structure. A 0.10 M solution of lactic acid has a pH of 2.44. Calculate the Ka of lactic acid.
NaOH to titrate 25.00 mL of an unknown acid solution to the equivalene point. What is the initial concentration of the acid?
What tripeptide would be synthesized from the informational strand of DNA with the sequence 5' GTATCCAGT?
A 5.0 g sample of a hydrate of BaCl2 was heated, and only 4.3 g of the anhydrous salt remained. What percentage of water was in the hydrate?
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