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As a substance condenses, it's temperature does not change. How does the energy of the molecules of the substance change as a result of the heat released? What type of energy must decrease in order for the temperature to decrease?
Combustion analysis of naphthalene, a hydrocarbon used in mothballs, produced 8.80 g CO2 and 1.44 g H2O. Calculate the empirical formula for naphthalene?
boron has two naturally occurring isotopes 10b 19.9 and 11b 80.1. although the b2 molecule does not exist naturally on
You are given solutions of HCl and NaOH and must determine their concentrations. You use 26.8 mL of NaOH to titrate 100. mL of HCl and 18.6 mL of NaOH to titrate 50.0 mL of 0.0818 M H2SO4. Find the unknown concentrations.
How does K effect the resting membrane potential, and what effect would you see with an elevated level, and a low level.
Given the following reaction. (Equation not balanced.) ZnS + O2 ? ZnO + SO2 How many grams of SO2 can be made from the reaction of 18.5 grams of O2 with excess ZnS
For the reaction NO(g) + 1/2O2(g) NO2(g) at 750 Celcius, What is the relationship between Kc and Kp. If the Kp =4.213x10^-6, what is the Kc
How many grams of O2 are required to react completely with 6.4 grams of Ga?
a sample of helium gas initially at 37 degrees celsius, 785 torr and 2.00L was heated to 58.0 degrees celcius while the volume expanded to 3.24L. What is the final pressure in atm.
aniline is being reacted with dimedone with an mgso4 catalyst. how does the lewis acid play a role in the mechanism? if
How much HCl is produced from the reaction of an excess of HSbCl4 with 3 moles H2S in the following reaction? HSbCl4 + H2S ! Sb2S3 + HCl
Titration of an oxalate sample gave the following percentages of percent oxalate: 12.28%, 12.54%, and 12.24%. Calculate the average and the standard deviation
A 40-cuft tank is filled with air at 14.7 psia and 80 F, The tank also contains a 15-lb block of dry ice (solid CO2, specific gravity of 1.53 based on water). After the dry ice sublimes, the temperature is 30F. What is the pressure? Assume idea..
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