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At 186 oC the equilibrium constant for the reaction: 2 HBr(g) H2(g) + Br2(g) is KP = 6.56e-11. If the initial pressure of HBr is 0.00753 atm, what are the equilibrium partial pressures of HBr, H2, a
Gaseous NOCl is placed in a closed container at 193 oC, where it partially decomposes to NO and Cl2: 2 NOCl(g) 2 NO(g) + 1 Cl2(g) At equilibrium it is found that p(NOCl) = 0.008460 atm, p(NO) = 0.00
Write ground-state electron configurations for these ions, which play important roles in biochemical processes in our bodies. (Use a noble gas core abbreviation) Na^+, Mg^2+ Cl^- K^+
Common Ion Effect: The Ksp of silver iodide is 8.3 x 10^-17. What is the iodide ion concentration of a 1 L saturated solution of AgI to which .2 mole of AgNO3 is added
Calculate the number of moles of B at each time in the table. 0 s mol 40 s mol 80 s mol 120 s mol 160 s mol (b) Calculate the average rate of disappearance of A for each 40 s interval, in units of m
Calcium fluoride has a Ksp of 3.9 x 10^-11 at 25 C. What is the fluoride ion concentration at equilibrium
Due to decay of ^40K, cow's milk has a specific activity of about 6x10^-11 mCi per milliliter. How many disintegrations of ^40K nuclei are there per minute in 1.0 qt of milk
he Sun has an orbital speed of about 220 km/s around the centre of the Galaxy, Estimate the total mass of the Galaxy in Solar masses
A voltaic cell is constructed that uses the following reaction and operates at 298 K. Zn(s) + Ni2+(aq) Zn2+(aq) + Ni(s) (a) What is the emf of this cell under standard conditions
Te orbit of an asteroid extends from Earths to Jupiter's, just touching both. Find the maximum and minimum orbital speeds of the asteroid
To which of the following would the addition of an equal volume of 0.70 M NaOH lead to a solution having a lower pH? A. 0.35M HCl B. 0.80 M KOH C. water D. 0.45 M NaNO3
The orbits of synchronous communications satellites have been chosen so that viewed from Earth they appear to be stationary. Find the radius of the orbits
Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. what force does the seat belt exert on
Draw its lewis structure, with the lone pair electrons, with the formal charges minimized? NO4 3-
A skateboarder, with an initial speed of 5.0 m/s, rolls virtually friction free down a straight incline of length 19 m in 3.3 s. What is the angle of the incline
a block of mass m = 2.50 kg is pushed a distance of d = 2.20 m along a frictionless horizontal table by a constant applied force of magnitude F = 16.0 N directed at an angle of 25.0 degrees below th
Draw the structure of the product(s) of the reaction between (S)-3-methylhexan-2-one and methylmagnesium bromide, followed by acidification. Use wedge and dash bonds to indicate stereochemistry
Calculate the equilibrium constant for the following reaction: (Ka of HCOOH = 1.7 x 10^-4) HCOOH (aq) + OH-(aq) <--> HCOO-(aq) + H2O(l)
Is anabolism occurs in digestive system? for example, at the liver, a process that synthesis glycogen is a anabolism, and liver is a part of digestive system. then isnt it wrong to say ''anabolism o
Two satellites, A and B, are in different circular orbits about the earth. Find the ratio (TA/TB) of the periods of the satellites
100.g of ice at 0C are added to 300.g of water at 25°C. Is it sufficient ice to lower the temperature of system to 0°C and still have ice remaining
It is proposed that future space stations create an artificial gravity by rotating. What rotation period will provide "normal" gravity
If the magnitude of the drift velocity of free electrons in a copper wire is 9.12 10-4 m/s, what is the electric field in the conductor
If the boiling point of the pure of (S)-(-)-alpa-phenylethylamine is 186-188 degrees Celsius, what is the bp of its enantiomer. What optical rotation would be observed if 3.72 g of (S)-amine were mi
The quantity of charge q (in coulombs) that has passed through a surface of area 1.95 cm2 varies with time according to the equation q = 5t3 + 5t + 6, What is the value of the current density