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A 0.2150g sample is dissolved and treated with excess AgNO3. The precipitate is filtered, washed, dried and weighed. Product mass (AgCl) is 0.4587g. What is the weight % of Cl in the original sample?
Denoting the initial, unknown concentration CD2+, write an equation to calculate the final concentration , CD2+ considering the dilution factor, units are ppm.
Draw the structure of the organic product formed in the reaction of m - cresol with sodium hydroxide
The nuclear mass of 141Ba is 140.883 amu. Calculate the binding energy per nucleon for 141Ba.
What mass (in grams)of KNO3 would have to be decomposed to produce 27.1 L of oxygen measured at STP?
A sample of water at 23.0 C required an input of 1.69 x 10^4 J of heat to reach its boiling point, 100 C. What is the MASS of the water
Show why the transfer of heat from an object with lower temperature to an object with higher temperature violates the second law of thermodynamics.
if you have 4 moles of hydrogen gas, how many moles of oxygen gas are needed for complete reaction?
what mass of Na2CO3 will be required to titrate 75.0 mL of 0.350 M HCl. This is the balanced equation given Na2CO3+2HCl--->2NaCl +H2O+CO2
Predict whether each of the following bonds is ionic, polar, covalent, or nonpolar covalent: a) Si--O; b) K--Cl; c) S--F; d) P--Br; e) Li--O; f) N--P.
the solubility of oxygen in water is 14.74mgl at 0 celcius and 7.03mgl at 35 celcius. estimate the solubility at 50
If 50 g of KNO3 is completely dissolved in 100 g of water at 70 degrees Celcius, is the solution saturated, unsaturated, or supersaturated?
how many grams of precipitate are formed when 204 ml of a 0.794 m aluminum sulfate soultion and 301 ml of a 1.48 m
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