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Explain if the lead can be extracted with 92.5% efficiency explain what mass of ore is required to make a lead sphere with a 6.00 cm radius?
A particular ball bearing has a mass of 85.0 grams. Calculate its diameter in cm. The density of this type of steel is 7.78 g/cm3
For part one of this lab, you will use 25.0mL of acetic acid and 25.0mL of sodium acetate. What should the pH be after adding 4.0mL of .20molarity HCl
the mole fraction of magnessium chloride mgcl2 in aqueous solution is 7.55x10-2. what is the percent by mass of
nbspa 1.423 g sample of a weak monoprotic acid is titrated with a 0.1383 m solution of naoh a strong base. after 37.65
A solution of H2SO4(aq) with a molal concentration of 5.25 m has a density of 1.266 g/mL. What is the molar concentration of this
Draw the skeletal structure for trans-1-ethyl-4-iodocyclohexane. Make sure the tapered end, i.e. the thin end, of the wedge bond is attached to the parent.
In a candy factory, the nutty chocolate bars contain 22.0 by mass pecans. If 4.60 of pecans were used for candy last Tuesday, how many of nutty chocolate bars were made
A compound contains only carbon, hydrogen, and oxygen. Combustion of 51.34 g of the compound yields 75.26 g of CO2 and 30.81 g of H2O. The molar mass of the compound is 90.078 g/mol.
When a 2.41x102 g strip of zinc is dropped into a large beaker containing excess hydrochloric acid, how many grams of gas are formed.
Two types of electrochemical cells which are based on thermodynamic principles can be described. Which of the following statements about these cells is correct
At 186 oC the equilibrium constant for the reaction: 2 HBr(g) H2(g) + Br2(g) is KP = 6.56e-11. If the initial pressure of HBr is 0.00753 atm, what are the equilibrium partial pressures of HBr, H2, and Br2? p(HBr) = . p(H2) = . p(Br2) = .
Which of the following gases deviate most from behavior of ideal gas: CO2, O2, He, N2, CH4
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