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A single strand of natural silk may be as long as 4.03 x 10^3 m. Convert this length into miles.
Write the net ionic equation, A stream of chlorine gas is passed through a solution of cold, dilute sodium hydroxide.
A small hot air balloon is filled with 1.02 x 10^6 L of air (d=1.20 g/L). As the air in the balloon is heated, it expands to 1.13 x 10^6 L. What is the density of the heated air in the balloon
Order these five gases that occur in the troposphere from most abundant to least abundant: Rn, CO2, CO, N2, Ar and O2.
What is the mass of a magnesium block that measures 2.3 cm * 3.5 cm * 1.5 cm? The density of magnesium is 1.738 g/cm^3.
Diamonds are measured in carats where 1 carat= 0.200 g. The density of diamond is 3.51 g/cm^3. What is the volume of a 2.50-carat diamond
The burning of 80.3 g of SiH4 at constant pressure gives off 3790 kJ of heat. Calculate ?H for this reaction.
How would the results differ if you added sodium p-toluate instead of p-toluic acid to the two-layer mixture of tert-butyl methyl ether and water
A rotating wheel requires 6.00 s to rotate 30.0 revolutions. What is the constant angular acceleration (in rad/s) of the wheel
Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, Experiment Initial conc of A, mol/L Initial conc of B, mol/L Initial conc of C, mol/L Initial rate, mol/L.s 1 0.1 0.2 0.4 2
What volume of gold would be equal in mass to a piece of copper with a volume of 140.0 mL? The density of gold is 19.3g/mL; the density of copper is 8.96 g/mL.
A 100-W resistance heater is connected to a 110-V doc source. What current flows through the heater
A reaction has a rate constant of 0.00704 sec-1, how long will it take (in minutes) until 0.212 mol/L of the compound is left, if there was 0.619 mol/L at the start
The length of a certain wire is doubled and at the same time it's radius is reduced by a factor of 2
A person who weighs 715 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. find the area of contact between each tire and the gr
You have proven sulfanilamide is capable of forming a stable and selective crystal lattice. Draw additional molecules of sulfanilamide and hypothesize the intermolecular interactions that are most i
Two converging lenses, each of focal length 14.5 cm, are placed 39.1 cm apart, and an object is placed 29.2 cm in front of the first. What is the magnifcation of the system
What would happened if HCl was accidentally used instead of Na2CO3 to extract caffeine from tea bags. Would you be able to fix your mistake. How
a disk is spinnning at a rate of 10 rad/s. a second disk of the same mass and shape, what is the final angular velocity of the two disks
At one instant, a system has 30J of kinetic energy and 30J of potential energy. How much work was done by conservative forces
Calculate the pH of the solution after the addition of 30ml of 0.1M NaOH. Show you work. Draw the structure of the form is His predominating in solution at neutral pH.
A bug sits on the rim of a 30 cm-diameter disk. The disk accelerates uniformly from rest to an angular speed of 75.0 rev/min in 4.30 s?, What is the tangential acceleration of the bug
Consider the reaction with the rate law, Rate = k[BrO3-][Br-][H+]2 By what factor does the rate change if the concentration of BrO3- is doubled and that of Br- is doubled
A man uses a tire iron to loosen his lug nuts. The tire iron is 25cm long. The man applies a force of 30N at an angle of 29° to the iron. What is the torque that is applied to the lug nut
For the reaction, A(g) + B(g) => AB(g), the rate is 0.579 mol/L.s when the initial concentrations of both A and B are 2.00 mol/L. If the reaction is first order in A and second order in B, what i