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what mass of Fe (OH)3 would be produced by reacting 75.0 mL of a 0.0815M Fe( NO3)3 solution with 125 mL of a 0.150 M NaOH solution
a saturated solution of copper(I) chloride, CuCl, has [Cu^+]=1.1x10^-3 M and [Cl^-]=1.1x10^3 M. what is the value of Ksp for CuCl
A rotating wheel requires 6.00 s to rotate 30.0 revolutions, What is the constant angular acceleration (in rad/s) of the wheel
A soluble salt, AgNO3, with a common ion is added to a saturated solution of AgCl to give [Ag^+]=2.0x10^-2 M. what is the [Cl^-]? AgCl Ksp=1.8x10^-10
The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.69 m and 1.04 m, respectively. The respective rotational speeds are 452 rev/min and 4,140 rev/min. Calculate the s
What alcohol would be most easily dehydrated. One that is on a long chain or a short chain
A source of 116m In (half-life = 54.0 min.) is counted using a G-M tube. Successive 1-min observations gave 131,340 counts, calculate the true interaction rate in the G-M tube at 12:00
For each of the following slightly soluble salts, write the equilibrium equation for dissociation and the solubility product expression: a)CuS b)Ag2SO4 c)Zn(OH)2
A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.8 x 10^4 rev/min, Determine the angle (in radians) through which the drill rotates during this
How many 2p atomic orbitals from boron must be mixed with a 2s atomic orbital to yield the bonding hybrid atomic orbitals in BF3. WHY
A potter's wheel moves uniformly from rest to an angular speed of 0.18 rev/s in 28.0 s, Find its angular acceleration in radians per second per second
Draw the electron-dot formula and predict the shape for each polyatomic ions: a) NO2^-; b) PO4^3-; c) ClO4^-; d) SF3^+.
would increasing the volume of the equilibrium mixture of each of the following reactions cause the equilibrium to shift and if so will the shift be toward products or reactants
Use VSEPR theory to predict the shape of each molecule: a) CF3; b) NCl3; c) SCl2; d) CS2; e) BFCl2.
Consider a swinging pendulum with length l= 10 cm, a mass of 1 gm swinging at the end of it with an amplitude, Calculate the total energy ( potential plus kinetic) in ergs of the swinging pendulu
Compare the electron-dot of CH4 and H2O. Why do these molecules have similar bond angels but different names for their shapes
In a molecule of H2S, the four electron groups around the sulfur atom are arranged in tetrahedral geometry. However, the shape of the molecule is bent. Why does the shape of the molecule have a diff
A 1248.0 g mass is on a horizontal surface with ?k = 0.36, and is in contact with a massless spring with a force constant of 790.0 N/m which is compressed, What is the velocity of the mass as it los
A bicycle wheel is rotating at 40rpm when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.45rad/s2, What is the wheel's angular velocity, in rpm, 10s later
according to le chateliers principle, what is the effect on the products when N2 is added to the equilibrium mixture of each of the following reactions? a)2NH3(g)<>3H2(g)+N2(g). b)N2(g)+O2(g)&
The equilibrium constant for the following reaction is .20 at 100 degrees C. if an equilibrium mixture contains solid carbon, [H2O]=.40 M, and [CO]=.40 M,what is the [H2]? C(s)+H2O(g)<>CO(g)+H
Consider the reaction 2SO2(g)+O2(g)<>2SO3(g). a) write the equilibrium constant expression for Kc. b) what is the Kc for the reaction if at equilibrium the concentrations are [SO2]=.10 M, [O2]
Two lens system: The original object is 20 cm to the left of a lens with a focal length of +10 cm, Find the location and magnification of the final image. Be sure to show or tell me from where you ar
write the balanced chemical equation for each of the following equilibrium constant expressions: a)Kc=[CO2][H2]/[CO][H2O. b)Kc=[H2][F2]/[HF]^2. c)Kc=[O2][HCl]^4/[Cl2]^2[H2O]^2. d)Kc=[CS2][H2]^4/[Ch