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The quantity of charge q (in coulombs) that has passed through a surface of area 2.08 cm2 varies with time according to the equation q = 4t3 + 5t + 6, What is the value of the current density
If a buffer solution is 0.230 M in a weak acid (Ka = 3.8 × 10-5) and 0.410 M in its conjugate base, what is the pH
The potenial energy for the force between two atoms in a diaomic molcules a-b has he approximate form v(x)= (-a/x^6 )+ (b/x^12), find the frequancy for small vibration
When CS2(g) (6.437 mol) and 51.91 grams of H2(g) in a 190.0 L reaction vessel at 983.0 K are allowed to come to equilibrium the mixture contains 1.444 mol of CH4(g). What concentration (mol/L) of CS
Two balloons (m = 0.028 kg) are separated by a distance of d = 0.9 m. They are released from rest and observed to have an acceleration of a = 1.9 m/s2 toward each other, How many electrons are respn
If NF can interact with a transition-metal ion to form a chemical bond, what type(s) of ligand-metal interactions would be most important. Would you expect NF to be high or low in the spectrochemica
Suppose a block of mass 5 kg is resting on a horizontal surface and coefficient of static friction between block and surface is 0.2. What is the reaction on the block by the vertical wall
Describe in detail how DNA is replicated including all forms of RNA needed and why complementary base pairing is important to the process.
When PCl3(g) (420.9 grams) and 0.007859 mol/L of Cl2(g) in a 390.0 L reaction vessel at 340.0 °C are allowed to come to equilibrium the mixture contains 200.7 grams of PCl5(g). What concentratio
Since CO2 is a liquid at this pressure and temperature would it form rivers, lake or oceans of liquid CO2 mixed with liquid water or will it stay in a gaseous form because of its lower abundance of
A certain cable car is San Francisco can stop in 10 s when traveling at maximum speed. how far was the car from the dog
When CO(g) (9.035 mol) and 144.6 grams of O2(g) in a 220.0 L reaction vessel at 608.0 °C are allowed to come to equilibrium the mixture contains 0.02021 mol/L of CO2(g). What is the concentratio
A red blood cell typically carries an excess charge of about -2.5 × 10-12 C distributed uniformly over its surface. How many excess electrons does a typical red blood cell have
match each of the elements on the right with he description on the left a) a dark-red liquid calcium (ca) b)a colorless gas the burns in oxygen gas gold (au) c) a metal that reacts violently with wa
When a sample of HI(g) (0.1192 mol/L) is placed in 110.0 L reaction vessel at 968.0 K and allowed to come to equilibrium the mixture contains 0.02028 mol/L of H2(g). What concentration (mol/L) of HI
A 0.00275-kilogram air inflated balloon is given an excess negative charge, q1 = -3.50 × 10-8 C, by rubbing it with a blanket. what polarity of charge must the rod possess
It is observed that 59.6 mL of water at 18.6°C completely fills a container to the brim. What is the coefficient of volume expansion of the container
Identify the ground state free ion terms with the spin multiplicity for the following cases: Cu2+, V3+, Cr3+, Mn2+, Fe2+, and Ni2+
The linear molecule FeH2 has been observed in the gas phase. Assume that the iron atom can potentially use s, p, and d orbitals to interact with the hydrogens. If the z axis is collinear with the mo
There are two identical, positively charged conducting spheres fixed in space. find the initial charge on each sphere
Two slits spaced 0.280mm apart are placed 0.640m from a screen and illuminated by coherent light with a wavelength of 680nm. What is the distance on the screen from the center of the central maximum
The generic metal hydroxide M(OH)2 has Ksp = 1.05×10?18. (NOTE: In this particular problem, because of the magnitude of the Ksp and the stoichiometry of the compound, the contribution of OH- f
When a piece of metal is irradiated with UV radiation (wavelength=162nm), electrons are ejected with a kinetic energy of 3.54x10^-19 J. What is the work function of the metal
The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, Determine the cheetah's average acceleration during the short sprint
Calculate the moles of Cl2 produced at equilibrium when 1.00 mol of PCl5 is heated at 250 degrees Celsius in a vessel having a capacity of 10.0 L. PCl5(g) <-> PCl3(g) + Cl2(g) Kc = 0.041 at 25