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A 2750 ml sample of 3 M HCl solution is treated with 4.66gm of magnesium. Calculate the concentration of the acid solution after all the metal has reacted. Assume that the volume remain unchanged.?
Zinc chloride (ZnCl2) is 52.02% chlorine by mass. What mass of chlorine is contained in 66.0 g of ZnCl2?
A sample of propane,C3H8, contains 11.7 moles of carbon atoms. How many total moles of atoms does the sample contain?
Calculate the work done in joules by the reaction when 0.21 g of Na reacts with water to form hydrogen gas at 1°C and 3.0 atm in an open container.
The specific heat cacpacity of solid copper metal is 0.385/Jg-K. How many joules of heat are needed to raise the temperature of a 1.55-kg block of copper from 33.0 0C to 77.5 0C
Why are monochromators (prism or grating monochromators) used in scanning instruments as opposed to absorption filters for
What volume would be occupied by 100 g of oxygen at a pressure of 1.50 atm and a temperature of 25ºC?
Suppose that a student performed the experiment and the calculations perfectly except for the following. Unknown the student, Cu (NO3)2•3H2O instead of CuSO4•5H2O was used to make up the known Cu 2 solution
Draw a 3-dimensional sketch, using dashes and wedges. Be sure to show all atoms (no line drawings), to draw pi bonds (with sets of overlapping p orbitals) and to include the orientation of lone pairs of electrons.
If it takes 526 J of energy to warm 7.40 grams of water by 17 degrees Celsius, how much energy would be needed to warm 7.40 grams of water by 55 degrees Celsius?
A sample of ammonia gas (NH3) is completley decomposed to nitrogen gas and hyrdogen gas. If the total pressure at the end of the reaction in 866mmHg
30.0 mL of 0.150 M CH3CO2H are titrated with 0.150 M NaOH. What is the pH of the solution after 15.0 mL of NaOH has been added. The Ka for acetic acid is 1.80 x 10-5
A gas sample occupies a volume of 20cm^3 at 40 degree Celsius and at a pressure of 1.60atm. What volume will it occupy at STP?
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