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A 1.00 g sample of NH4NO3 is decomposedin a bomb calorimeter. The temperature increases by 6.12°C.What is the molar heat of decomposition for ammonium nitrate? Molar mass, NH4NO3 80.0
A 3500kg statue is placed on top of a cylindrical concrete (Y = 2.3 x 1010N/m2) stand. The stand has a cross sectional area of 7.3 x 10-2m2 and a height of 1.8m. By how much does the statue compress t
What is the magnitude of the resulting impedance, z, (in ohms) and current I, (in amps) when it is hooked up to a 60 hz 220v outlet?
Identify the limiting reactantc) Predict the appearence of the substances left in the reaction container once the reaction is compleate.
Philippine Aviation design calls for a lift due to the net force of moving air on the wing of about 2000N per m2 of wing area.
What is the change in entropy of 10 mol of ethylene if the gasis initially at 200oC and 800 KJ of heat is added into the system?Assume steady flow process and atmospheric pressure.
A wire 50.0 cm long and under tension 400N is placed near a louderspeaker fed by an audio oscillator of variable frequency. As the frequency of the oscillator is varied over the range 500-1500 Hz ,
A 6-ft tall man walks away from a 15-ft tall streetlight at 6 ft/sec. How fast is his shadow increasing when he is 8 feet from the light pole?
If a 58g sample of metal at 100degrees C is placed into acalorimeter containing 60 g of water at 18 degrees C, the temp ofthe water raised to 22 degrees C.
Why were the relative intensities of an element's spectral line not all the same?
A 30-foot ladder is leaning up against a roof that is 20 feet above the ground. How far from the building is the foot of the ladder? What is the angle between the ladder and the ground?
A vibration in a beam caues the load to sway up and down 2.8 inches 24 tmes in a minute. when (in s) does the deflection first reach 1.0 inch below equilibrium?
The helium neon lasers usually used in classrooms typically provide an intensity of about 1m/W/mm^2. What are the rms electric and magnetic fields for such a beam.
A current of 25.0 amps was maintained for 20 minutes through asolution containing excess Cu2+. How much Cu ( in grams)is plated out on the cathode?
A parallel line passes through the origin. What is the equation of this line? A perpendicular line passes through the point (0,7). What is the equation of this line?
Compare the relative reducing strengths of LiAlH4 and NaBH4. What functional groups are reduced by each?
To what two classes of compounds can primary alcohols be oxidized?What determines which product results from such an oxidation?
A mixture of 100 g of K2Cr2O7and 200 g of water is stirred at 60°C until no more of the salt dissolves.The resulting solution is poured off, leaving the undissolved solid behind.
What is the Magnitude of the resulting impedance , Z, (in ohms) and current I , (in amps) when it is hooked up to a 60 Hz 220 v outlet?
Copper crystallizes in a face-centered cubic lattice. If the edge of the unit cell is 351 pm, what is the radius of the copper atom?
The elevator accelerates upward with constant acceleration for a distance of 3.6 and then starts to slow down. What is the maximum speed of the elevator?
What is B(A+C)/A in cartesian notation? Express B, A and ( A+ C) in polar notation and repeat the above question.
A sample of an ideal gas at 15.0 atm and 1.0L is allowed to expand a constant external pressure of 2.00 atm at a constant temperature. Calculate the work in units of kJ for the gas expansion.
How many protons must combine to make one He nuclei every second to provide the luminosity of the sun? Estimate how long the Sun could go on at this rate before all its protons were used up.
(a) prove that the total momentum of the system is zero (b) prove that the total angular momentum of the system (Lem) is independent of the choice of origin