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Water's heat of fusion is 80. rm{cal/g} , its specific heat is 1.0matrix{rm frac{cal}{g cdot ^{circ}C}}, and its heat of vaporization is 540 rm{cal/g} .
A canister is filled with 340 g of ice and 100. rm g of liquid water, both at 0 rm{^{circ}C} . The canister is placed in an oven until all the rm H_2O has boiled off and the canister is empty. How much energy in calories was absorbed?
When making up an unknown solution for absorption measurements, a good plain is to make up a solution that is rather on the concentrated side, measure its absorbance and compare it to the absorbance range of your standard curve. If it is higher th..
For the following reaction, 4.91 grams of sodium are mixed with excess water. The reaction yields 5.83 grams of sodium hydroxide.
An analysis is performed on a sample of vine that contains unknown concentration of alcohol. A solution containing 0.0450M of ethyl alcohol (the ANALYTE) gives peak area of Aa=630 and a solution containing 0.030 M of propyl alcohol gives a peak of..
A line in the emission spectrum of an atom occurs at a wavelength of 560 nm. What is the energy difference between the two energy levels involved in this emission.
Liquid carbon disulfide burns in oxygen to form carbon dioxide and sulfur dioxide gases. Calculate the number of oxygen molecules it would take to consume 500 molecules of carbon disulfide
What volume (in mL) will it occupy at the same pressure and 277 K? Round your answer to zero places past the decimal.
Determine the oder of the reaction in H2O2 and KI. Explain how you arrived at your answer. Calculate the rate constant, k, and write the rate law expression for the catalyzed decomposition of hydrogen peroxide.
what are the [H3O^+] and OH^-] for a solution with each of the following pH values? a)10.0 b)5.0 c)6.5 d)1.82
One compound of mercury with a formula mass of 519 g mol-1 contains 77.26%Hg, 9.25%C, and 1.17%H (with the balance beingO). Calculate the empirical and molecular formulas.
What is the wavelength (in nm) of a photon emitted during transition
what the information about newly discovered virus that we should know before we could devolope an effective drug therapy
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. What would be the potential of t..
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