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Explain at what volume of a solution of ethylene glycol,C2H6O2, that is 57.2% ethylene glycol by mass contains 0.340 mol C2H6O2 and which is having the density of the solution1.072 g/mL.
An ac circuit consists of a resistor of 20.0 ohm and an inductor of 35.0 mH in series. The circuit draws a maximum rms current of 2.0 A if operating at 60 Hz and 120 v rms. Sketch phasor diagram and
In the atmosphere the hydroxyl radical (OH) is an important oxidizing agent. At 298 K the rate constant for the reaction of OH with benzene is 1.24 x 10-12cm3 molecule -1 s&
Prepare a sketch representing direction of magnetic field, orientation of coil and direction of flow of current. Do not require drawing all 40 turns, simply one turn will work.
Suppose you have 75.0ml of a 2.50M solution of Na2CrO4 (aq) and you also have 125mL of a 1.92M solution of AgNO3 (aq). Determine the concentration of Ag+ when the two solutions are added together.
A cube of iron is hanged by a cord in a tank of water. The length of a side of the cube is around 5.0 cm. When the cube is fully immersed in the water, evaluate the tension in the cord.
Explain what volume of 0.500 M CaCl2 solutions is required to prepare the 250 mL of solution that has a chloride concentration of 0.100 M?
The two bodies encompass the similar shape and size; however one is denser than the other. Which body, if either, consists of the greatest buoyancy in the air?
By taking 10.0 mL of the unknown a student does a standard addition experiment, adding different volumes of the Fe(II) standard, adding the appropriate reagents and diluting to the mark in a 50.0mL
A certain LCD projector includes a single thin lens. An object of 24.2 mm high is to be projected so that its image fills the screen 1.78 m high. The object-to-screen distance is 2.94 m. (i) Find o
Calculate the maximum mass of CaO(s) in grams that could be prepared from 9.24 g of Ca(s) and 2.23 g of O2(g) when the Calcium reacts with oxygen to make calcium oxide, CaO.
A thick 1.0m dive platform made up of yellow pine (density of yellow pine is 550kg/m^3) is floating in the water Determine how much of the 1.0m thick platform (in meters) is sub-merged?
Determine the numbers of gallons of water (d = 1.0g/mL) are required to fill the pool to an average depth of 4.5 ft?
Assume depreciation is exponential. Determine the formula for value of car at time t. Assume instead that depreciation is linear. Determine the formula for value of car at time t.
A) A nurse exerts a force of 4.33 N to the piston of a syringe. The piston consists of an area of 5.79 x 10-5 m2. Determine the pressure raise in the fluid in the syringe?
Calculate the theoretical yield of acetanilide in moles and grams, if 10 grams of aniline are allowed to react with excess acetic.
What mass of calcium nitride forms, when 31.7 g nitrogen and 57.0 g calcium gas undergo a reaction that has a 95.0% yield.
Suppose that a 10-ml graduated cylinder (in which the volumes can be read to the nearest 0.1 ml) and a 100-ml graduated cylinder are available then how will you prepare the following solutions from
An equilibrium mixture which is having N2O4, (P=0.26 atm) and NO2 (P=1.2atm) at 350 K. At the constant temperature the volume of the container is doubled.
How many millions hectares of natural forests were lost during 1990's? How many millions hectares of natural forests existed in year 2000?
Determine the numbers of grams of CuSO4*H2O are required to prepare the stock solution? A stock solution of approximately .09 M [Cu(NH)4]2+is prepared by dissolving a small quantity of CuSO4*5H2O in a
A student is ice fishing in Colorado on the frozen lake over spring break. He cuts a circular hole in the ice which consists of a diameter of 0.50m. The ice on the lake is 0.50m thick. Determine the
Suppose a spacecraft which can travel with a speed of 5 * 10^4 km/hr (a typical speed of a present day spacecraft), determine how long would it take to reach that latest planetary system?
Calculate the maximum mass of K2O(s)that could be prepared from 8.04 g of K(s) and 2.28 g ofO2(g) if Potassium reacts with oxygen to make potassium oxide, K2O.
Determine the numbers of grams of Pb(NO3)2 would you need to add to 75 mL of a 2.5 M NaCl solution to precipitate out all of the Cl-?