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A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath. To what temperature (oC) will the oil bath need to be heated to first open the safety valve?
A. 270
B. 340
C. 100
D. 170
E. 62
Consider: C7H16 (l) + 11 O2 (g) → 7 CO2 (g) + 8 H2O (l) ΔH°reaction=- 4130 kJ. How much energy is released when 4.000 moles of C7H16, is combusted?
Use the oxidation-number method to balance the following net ionic redox equation.
calculate the mass of Cl2 consumed if the battery delivers a constant current of 853 A for 28.0 min.
Determine how many moles of SO 3 are formed if 12.24 moles of O 2 react with excess SO 2 ,? use the balance equation given as 2SO 2 (g)+O 2 (g)----> 2SO 3 (g)
what is the difference of the KBR specrtum in % transmittance and absorbance. and btw wavenumber and wavelength
Assume also that on a yearly basis the lake is completely mixed, and that the small river flowing into and out of the lake can be neglected as far as acidification is concerned. How many years will it be before the lake will reach a pH of 5.0?
Oleum or fuming sulfuric acid availble commerically in concentrations ranging from 20 to 99% sulfur trioxide. 1. What is the percentage by mass of sulfer trioxide (SO3)
3H2 (g) + N2 (g) 2NH3(g), Kc = 6.0 × 10-2 at 500°C for this nitrogen fixation reaction. What is the equilibrium concentration of N2 If 0.250 M H2 and 0.050 M NH3 are present at equilibrium?
The half-life of a certain radioactive element is 1,250 years. What percent of the atoms remain after 7,500 years?
An aqueous antifreeze solution is 35.0% ethylene glycol (C2H6O2) by mass.
The terms SCOT, WCOT, & PLOT are frequently used to describe types of GC columns. Specifically how do these columns differ from "Packed" columns in their structure and function
Calculate the number of grams of Mg(OH)2 that should dissolve in 100 mL of water.
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