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A person walks in the following pattern: 1.9 km north, then 9.6 km west, and finally 3.4 km south. Construct the vector diagram that represents this motion and from it judge how far and in what direction a bird would fly in a straight line from the same starting point to the same final point. (Choose east as the +x direction.)
1 ________ km (magnitude)
2 ________ ° (direction)
the thermal equilibrium temperature of the metal sample plus water mixture is 24.6 *C. what is the specific heat of the metal?
Calculate the average translational kinetic energy (sometimes just called average kinetic energy) for one mole of gas at 385 K.
if the limiting molar conductivity is finite dilution of Ba2+ and SO4 ions are 127.2 and 160 ohm/cm/mol calculate the solubility and solubility product
A system is expanded against an external pressure of 2 atm, changing its volume from 10 to 35 L and absorbing 765 J as heat from the surroundings
Explain the relationship between free-energy change and spontaneity of reactions.
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
If the overall of the coupled reaction is -7.60 , what is the equilibrium constant, , of the first reactions at 6? The for the hydrolysis of ATP to AMP is 31.6.
Calculate the molality and molarity of an NH3 solution made up of 37.0 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
Give the systematic names for the formulas, or the formulas for the names. (The format copper(II) chloride for CuCl2, and using the format CO2 for CO2. Omit the centered dot for hydrates.)
A galvanic cell Zn / Zn2+ // Cu2+ / Cu generates a current of 4.00 Amperes for 1.00 hour. The cathode increases in mass by 10.0g . If charge on an electron is 1.602 x 10-19 coulombs/ electron.
Ammonia gas is produced by reacting hydrogen gas with nitrogen gas. To produce 50.0 g of ammonia gas using air as your source of nitrogen gas, what volume of air is required if the air is introduced at 29°C and 745 mmHg
Determine molality and the change in temp? If know those can plug them into the same equation: change in temp = iKfm
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