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Problem- Pure copper may be produced by the reaction of copper(I) sulfide with oxygen gas as follows: Cu2S(s) + O2(g) ï?® 2Cu(s) + SO2(g) If 0.680 kg of copper(I) sulfide reacts with excess oxygen, what mass of copper metal may be produced?
Give your answer with short explanation
the energy levels the electron can occupy in thehe ion can be calculated using the energy level equation. calculate the
Phosphorus-32 has a half-life of 14.0days . Starting with 6.00g of 32p , how many grams of phosphorous will remain after 42.0days.
Aqueous solutions of sodium sulfide as well as copper (II) chloride are mixed together. State which statement is correct?
The titration of 0.7910 grams of an unknown weak acid requires 41.5 mL of 0.139 M NaOH in order to reach the equivalence point.
Determine deltaHvap for a compound that has a measured vapor pressure of 24.3 torr at 273 K and 135 torr at 325 K.
Problem- 10 mL of 0.50 M NH3 is titrated with 0.20 M HCl solution. How many mL of HCl solution are needed to neutralize the solution
The chloride in the sample was precipitated by the addition of 47.8 mL of a silver nitrate solution. What is the concentration of the silver nitrate solution?
Which of the seven Anions will be the hardest to detect (same anions as above), Why do you think this? If two or more are possible explain why.
calculate what volume of each 0.50M solution should be mixed to give a total volume of 50.0mL AND the reactants in the correct stoichiometry. Also write a data table in the space given
Calculate the boiling point of 0.175 m MgF2. I figured out the freezing point and it is -.0977 C, but i cannot figure out the boiling point.
A large cylinder of He gas,such as that used to inflate balloons,has a volume of 25.0 L at 22 Celsius and 5.6 atm. how many moles of He are in such a cylinder ?
Draw orbital-filling diagrams for atoms with the following atomic numbers. Show each electron as an up or down arrow, and use the abbreviation of the preceding noble gas to represent inner-shell electrons
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