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Chalcopyrite, the principal ore of copper (Cu), contains 34.63% Cu by mass. How many grams of Cu can be obtained from6.83 ×104 kg of the ore? Enter your answer in scientific notation.
How much heat (in kJ) is needed to convert 866 g of ice at -15 degress celsius to steam at 146 degrees Celsius? (The specific heats of ice and steam are 2.03 and 1.99 J/g x C respectively)
a 1.800 g sample of phenol c6h5oh was burned in a bomb calorimeter. the calorimeter contains 1250 g of water and the
What minor product(s) might be expected by this method. Give the detailed reaction mechanism leading to the final product (major). What simple chemical test(s) would help establish that you had, in fact, made the desired alkene product
Based on the following equation, determine the mass of a 50.0mL sample of your salt solution. Report the mass as a number and use all lower case letters to spell out the word(s) in the unit(s).
Did enzyme denaturing affect the active site? what amino acid residue in catalase would change by more basic PH
What are the equilibrium partial pressures of \rm PCl_3 , \rm Cl_2, and \rm PCl_5, respectively. For the exothermic reaction PCl3(g)+Cl2(g)\rightleftharpoons PCl_5(g) K_{\rm p} = 0.100 at a certain temperature.
What is the most important attractive forces (London dispersion, dipole dipole, hydrogen bonding) and the number of bonding domains
Which compound in each of the following pairs should have a higher melting temperature? (a) NaCl or RbCl (b) BaO or MgO (c) NaCl or MgS
How much PV work is done in kilojoules for the reaction of 0.48 of with 0.24 of at atmospheric pressure if the volume change is -9.2
Question- The rate constant for this first order reaction is .0840 s-1 at 400 C after how many seconds will 23.6% of the reactant remain
say you removed an ice cube at -10 ordmc weighing 36 g from your freezer. now you place the ice cube in a 90 g sample
An unknown substance contains only C, H, and, O. Combustion of 190.81 mg sample of the substance produces 387.77 mg CO2 and 72.17 mg H20.
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