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3.45 g of an unknown gas at 41 °C and 1.00 atm is stored in a 1.25-L flask. What is the density of the gas. What is the molar mass of the gas.
A current of 32.9 mA flows in a silver wire of diameter 4.01 mm, Find the electric field strength inside the wire
Calculate the degrees of unsaturation in a compound with the molecular formula C3H6 and draw two possible structures, including hydrogen atoms, for the formula.
A torque of 12 N * m is applied to a solid, uniform disk of radius 0.50 m. I f the disk accelerates at 5.6 rad/s^2, what is the mass of the disk
a student standing on a train staiton observes that the pitch (frequency) of the train decreases from 888.8 Hz to 862.8 Hz, What is the speed of the train
which gas has particles with the slowest average speed at 28 C? 1- Carbon dioxide 2- Sulfur trixoide 3- Sulfur hexafoluride 4- Hydrogen choride 5- Helium
Nichrome is a nickel chromium allot commonly used in heating elements. suppose you have a coil of nichrome wire that is 25.0 m long, what is the resistance of the Nichrome wire
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 68.80 diopters, If the writing on the blackboard is 5.70 cm high, what is the size of the imag
(Calculate using the given masses.) lighter isotope amu heavier isotope amu (c) Determine the average molecular mass of a Br2 molecule. amu (d) Determine the average atomic mass of a bromine atom. a
Alpha Centauri, a star close to our solar system, is about 4.3 light years away. Suppose a spaceship traveled this distance at a constant speed of .90c relative to Earth. What is the trip distance a
Arrange the following 0.1 M solutions in order of increasing conductivity and explain why you chose this order: 0.1 M FeCl3, 0.1 M MgCl2, 0.1 M NaCl, 0.1 M glucose (C6H1206)
two charges are places on the x axis, +5.0x10^-6C at the origin and -10.0x10^-6C at x=10cm. At what point(s) on the x axis is the electric field zero
How much energy is evolved in the transition from the n = 2 to the n = 1 level for 0.5 mole hydrogen
Gold, which has a mass of 19.32 g for each cubic centimeter of volume, is the most ductile metal, what is the area of the leaf in square meters
A welder uses 20 gallons of gaseous acctylene (C2H4). What volume of O2 gas measured at the same conditions is consumed Given the following equation
A pendulum oscillating on the moon has the same period as a(n) 3.14 m pendulum oscillating on Earth. find the length of the pendulum on the moon
A person who weighs 653 N is riding a 100-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires
An electric motor can lift a weight of 2000N through a height of 10 m in 20 sec. What is power of motor
write the reaction that occurs when ammonia and acetic acid are mixed. b. Although ammonia and acetic acid are weak electrolytes, a mixture of these two solutions behaves as a strong electrolyte.
Derive an equation for specific gravity in terms of the ry sample weight and the apparently lighter submerged weight, Calulate the specific gravity of each sample
In each case indicate whether the reaction is spontaneous at 298 K under standard conditions. P4O10(s) + 16H2(g) -> 4PH3(g) + 10H2O(g) Gibbs free energy for P4O10(s) is -2675.2 kJ/mol Gibbs free
When specially prepared Hydrogen atoms with their electrons in the 6f state are placed into a strong uniform magnetic field, If we don't neglect the intrinsic spin of the electrons, then how many ener
A force of 25.33 N is applied tangentially to a wheel of radius 0.340 m and gives rise to an angular acceleration of 1.20 rad/s^2
Use values of ksp and kf for copper (II) hydroxide and its complex to predict if a precipitate should form in a 0.1 M Cu2+ solution that is 3M in OH-
An uncharged 4.70*10^-6 F capacitor and an 8.00 *10^5 Omega resistor are placed in series with a 12.0 V battery. find the Maximum Current through the curcuit after the switch is closed