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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
The formation of a white solid id often observed after alpha-phenylethylamine comes into contact with carbon dioxide in the atmosphere. What is that white compound? Give an equation that shows its
Sarge quickly approximates the rope to be a string with a very high spring constant. What is the speed of wave propagation on the rope
Two 5.0-cm-diameter metal disks separated by a0.61-mm-thick piece of Pyrex glass are charged to a potential difference of 1300V. What is the surface charge density on the glass
How could you isolate the R-(+)-alpha-phenylethylamine from the mother liquor that remained after you crystallized and filtered off the S-(-)-alpha-phenylethylamine
Write the Henderson-Hasselbalch equation for a solution of propanoic acid (CH3CH2CO2H, pKa = 4.874 ) using HA and A- in the expression. pH= ? Using this equation, calculate the quotient
in the second step of the Mond process, the gaseous Ni(CO)4 is isolated and heated to 500 K. the equilibrium constant for the above reaction at 500 K is 1.21 x 10^-4. why is the temperature increase
Consider the structure of 1-butanol and explain why this alcohol does not undergo SN1 reactions.
A snowboarder starts from rest rides 30.31m down a snow covered slope that makes an angle of 34.19 degrees with the horizontal, How far will she travel along the flat snow