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Throughout the weighing of their unknown for this experiment a student inadvertently contaminated their sample with a few grains of sand (SiO2), recorded the weight of the of the contaminated sample, as well as proceeded with the experiment.
Would that student's computed molecular weight be too high, too low or would this type of contamination lead to no error in the final result? the sand wouldn't dissolve in water, and hence would just lie on top of the resin column as well as lead to no ion exchange results.
If the final temperature of the system is 59.4 oC, what is the calorimeter constant (Ccalorimeter) ? Use 4.184 J/goC for the heat capacity of water.
for the coordination compound crnh34no22 clo43a how many ions will this compound create in aqueous solution ?b what is
a sample of powder was found at a crime scene. it is believed that the powder is cocaine. the only four elements in the
A mixture of 2.00 moles of H2, 3.00 moles of MH3, 4.00 moles of CO2, and 5.00 moles of N2 exert a total pressure of 350kPa. What is the partial pressure of each gas?
An application calls for N2(g) with a density of 1.80g/L at 32 degrees. What must be the pressure (atm) of the N2(g)?
Calculate the expected pH of 0.05 M HAc, 0.05 M Ac-, and 0.05 M HAc/0.05 M Ac- after the addition of 1 mL 1.0 M NaOH to each.
In which of the following are there more than eight electrons in the valence shell of the central atom?
gram sample of a gaseous hydrocarbon has a volume of 820 ml when measured at 227 degrees Celcius and 2.50 atm.
How many liters of N2 gas result at 25.0oC and 1.10 atm pressure when 125 grams of NaN3 react
You have measured the absorbance for a vitamin sample to be 1.2 at a wavelength of 264. Can you use this reading to determine the INITIAL CONCENTRATION of your vitamin sample?
Explain why triethylamine is a weaker base than dimethylamine or methylamine.
Explain how to write a net ionic equation for what happens when a solid sodium sulfate dissolves when placed in water
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