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When doing a calorimeter experiment, my early temperature was21.C. while the MgO was added the first reading was 26.C and peaked at 30.1C. How would compute q, the amount of moles of MgO (0.25g of MgO were mixed with 20mL of hydrochloric acid of 1mol *L-1). Lastly, what is the ΔH for this?
a saturated solution of strontium hydroxide is prepared andthe excess solid strontium hydroxide is allowed to settle.
What is the pressure exerted by 87.2 g of chlorine gas in a 14.0-L vessel at 12.3oC. (R = 0.08206 L atm K-1 mol-1)
calculate how many protons are required to pass through the xeno-FoF1-ATP synthase complex to synthesize one ATP
What is the percent by mass of water in iron (II) sulfate heptahydrate, FeSO4*7H2O (or what percent of the molar mass of FeSO4*7H2O is due to the waters of crystallization
State A 130.0 mL sample of a solution that is 2.9×10-3 M in AgNO3 is mixed with a 220.0 mL sample of a solution that is 0.10 M in NaCN. Subsequent to the solution reaches equilibrium, Explain what concentration of Ag+(aq) remains
The critical constants of ethane are Pc= 48.20 atm, Vc= 148 cm3mol-1, and Tc= 305.4 K. Calculate the van der Waals parameters of the gas and estimate the radius of the molecules.
What spectroscopic method would you use to unambiguously distinguish between the following isomeric acids. Give an explanation of how the spectra are interpreted to give you an assignment for each compound.
Why is the E isomer of 1,2-dibenzoylethylene more stable than the Z isomer? is this why irradiation goes from E to Z and not the other way around? also discuss polarity differences between the two isomers.
Some wastewater has a BOD5 of 150 mg/L at 20 degrees Centigrade. The reaction rate k at that temperature has been determined to be 0.23/day.
the average rate of consumption of br- is 1.85times10-4 over the first two minutes. what is the average rate of
Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride
Calculate the concentration of cadium chloride contaminant in the original groundwater sample. Round your answer to 2 important digits.
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