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A rigid stainless steel chamber contains 160 Torr of methane, CH4, and excess oxygen, O2, at 160.0 °C. A spark is ignited inside the chamber, completely combusting the methane. What is the change in total pressure within the chamber following the reaction? Assume a constant temperature throughout the process.
A solution is .855% HNO3 by mass. Density of the solution is 1.01 g/mL. Find [H+], [OH-], and pH.
Calculate the molarity of a solution made by adding 21.7 mL of concentrated potassium hydroxide (34.5 % by mass, density 1.46 g/mL) to some water in a volumetric flask
A solution contains 0.10 mol/L of a diprotic acid. The diprotic acid has the following pKa values: pK1 = 5.00 pK2 = 7.05 What is the isoioni point of this acid?
write the MO configuration of N2^+ and terms symbol for the ground state and excited states. show the photoelectron spectrum of N2. Assign short and long progression band.
To prevent tank rupture during deep-space travel, an engineering team is studying the effect of temperature on gases confined to small volumes
Niobium (Nb) has a BCC cubic crystal structure, and an atomic radius of 0.144 nm. a) Calculate the edge length (d) of a niobium unit cell:
An aqueous solution that contains 285ppm of potassium nitrate (KNO3) is being used to feed plants in a garden. What volume of this solution is needed to prepare 1.7 L of a solution that is 97 ppm in KNO3?
(a) If the fuel consists of 9.3 mole CH4, 3.1 mole C2H6, 0.40 mol C3H8, and 0.20 mole C4H10, what mass of CO2 (g) is produced per minute? (b) How much heat is released per minute?
A solution contains 9.87 (g) of dissolved silver. How many moles of potassium chloride must be added to the solution to completely precipitate all of the silver?
A 275mL sample of O2 is collected over water at 60 degrees C the total pressure 755 torr what is the volume of O2 at STP?
The thermal decomposition of phosphine (PH3) into phosphorus and molecular hydrogen is a 1st order reaction 4PH3(g)--- P4(g)+6 H2(g) The half life of the reaction is 35.0 s at 680C calculate a)
how many grams of KO2 are needed to produce 180.0 L of O2 at 18.0 C and 1.00 atm
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