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The following reaction is used in some labs to produce greenhouse gas: CaCO3(s) + 2HCl(aq) ? CaCl2(aq) + H2O(l) + CO2(g) a) (6 pts) In an experiment 25.0 mL of 1.00M HCl and 1.73g of CaCO3 were used. How much CO2 in grams can form? b) In another experiment CO2 gas was collected over water. Its volume measured at 20.0 oC and 750. mm Hg was 0.153L. What is the percent yield of CO2 if the expected theoretical yield is 8.11·10-3 mol? Vapor pressure of water at 20.0 oC is 17.55 mmHg .
If 175 g of X reacts completely with diboron trioxide to produce 2.43 mol of B4X3, what is the identity of X?
A mixture containing 9 mol of F2 and 4mol of S is allowed to react. This equation represents the reaction that takes place. 3F2+S-->SF6
How would you use an experimental distillation curve to determine the percent, by volume, composition of an unknown mixture
It is produced natrually from degradation of organic matter, and also anthropogenically from fuel combustion.) The acid dissociation constant, Ka for formic acid is 10-3.7. Assume T=4*C and I=0.
The radius of a xenon atom is 1.3\times 10^-8 cm. A 100mL flask is filled with Xe at a pressure of 1.5atm and a temperature of 254K
one of the components of the fuel mixture on the apollo lunar module involved a reaction with hydrazine n2h4 and
How many moles of NaOH must be added to 1.0 L of 1.2 M HC2H3O2 to produce a solution buffered at each pH
If a reaction between Zn and I2 takes place, are the physical and chemical properties of the substances isolated during and after mixing the same as or different from those of Iodine and Zinc? Explain using the reaction as an example.
layered 20 mL of 2% sebacoyl chloride (decanedioyl chloride)/hexane on top of the aqueous solution. And then we used forceps to draw the solid that forms at the interface A(nylon) into a thread and wound the thread around a test tube. (It was whit..
For the reaction: Ag(s) + SCN-1 ? AgSCN(s) + e- AgSCN is deposited on a pure Ag electrode. If the Ag electrode weighed 12.463 g initially, by how much did it increase in weight after the electrolysis of 75.0 mL of 0.0238 M KSCN
An ideal gas is allowed to expand from 8.40L to 12.6L at constant temperature. By what factor does the volume increase. The pressure will increase by same factor
What are the initial and final pH's? What would be the pH if the same amount of HCl were added to the 125 mL of pure water? The Ka of acetic acid is 1.8*10^-5
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