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how much heat (in joules) must be added to change 20.0 g of H2O (s) at -10.0 ? Cto steam at 110.0 ? C? the specific heat of H2O(s) is 2.09 J/g ?C, of H2O (l) is 4.184 J/g ?C, and of H2O (g) is 1.84 J/g ? C. The heat of fusion of water is 334.7 J/g and the heat of vaporization is 2259.4 J/g.
If you wanted to prepare a 1.45 L buffer with a total phosphate concentration of 0.0500 M, how many grams of NaH2PO4 and Na2HPO4 would you mix together? How many grams of conjugate acid do you need? How many grams of conjugate base do you need?
Calculate the number of grams necessary to prepare 50. ml of 0.45 M NaCO2H. Calculate its pH.
Based on the Hume-Rothery Rules, speculate on the possible driving forces behind the tendency for ordering in this system.
What wavelength of light would you report in units of nm, if the light had a wavelength of 7.60 x 10-10 m?
Sodium Bisulfite UseThe non-shrinking, non-warping nature of ultramarine blue, along with its exceptional heat and light stability has led to the development of a range of high quality ultramarine blue pigments specifically for masterbatchs applicati..
Calculate the integral of dqrev / T for each of the 4 steps in the Carnot cycle of, and sum them to prove that their sum equals zero. This turns out to also be true for any cyclic process that returns the system
Alkyl halides add to alkenes in the presence of AlCL3; yields are the highest when tertiary halides are used . predict the outcome of the reaction of t-pentyl chloride
How many moles of sulfur dioxide, SO2 are contained in a 5.0 L container at STP?
A mixture of CaCO3 and CaO weighing 0.680 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.489 g.
Find the amount of known substance present in the mixture and determine the mass of calcium carbonate present in original mixture.
What mass of rm NaOH is needed to precipitate the rm Cd^{2+} ions from 35.0 mL of 0.540 M rm Cd(NO_3)_2 solution?
the distance gauge indicates that you have traveled 15.2mi. what was your rate in km/hr?
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