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write a balanced chemical reaction for the double replacement between aqueous aluminum nitrate and sodium
ice has formed on a shallow pond and a steady state has been reached with the air above the ice at -41degc and the
draw a mixer with three streams write the mass balance for the unit assume three different
from the stoichiometry its shown that the sodium ethoxide is used in excess what happens to this excess during work out
an ideal solenoid has a field of magnitude 010 t when carrying a current of 200 a the solenoid is 50 m long what is the
calculate the number of ml of 0050m naoh that will need to titrate 750ml of hydrochloric acid originally at a ph of
metal oxides like lime cao are called basic anhydridesexplain why this is soshow the reaction that takes place when
the assembly made with massless strings attached to balls ball a m03kg is released from height 02m above ball b m05kg
a note on a piano has a frequency of 440 hz if the tension in the 050-m-long string is 485 n and one-half wavelength
calculate an approximate enthalpy in kj for the reaction of 452 g gaseous methanol ch3oh in excess molecular oxygen to
an electron with a speed of 30x106ms moves into a uniform electric field of magnitude 10x103 nc the field lines are
how many kcal are required to raise the temperature of 152g of ice at -15degre celcius to water at 55 degre celcius
a new car is crash tested by running it into a heavy barrier at 41 kmh the car has a mass of 1439 kg and takes 014 s to
the work function of an element is the energy required to remove an electron from the surface of the solid element the
if a persons food energy intake is 2400 kilocalories per day and if all this energy is given off as heat what is the
what is the molar solubility of barium fluoride baf2 in water the solubility-product constant for baf2 is 17 x 10-6 at
a solution of naf is added dropwise to a solution that is 00144 m in ba2 when the concentration of f- exceeds m baf2
a person sitting on a stool rotating at a rate of 21 rpm holds masses in each hand when their arms are outstretched
for each of the pair indicate which substance posses the larger standard enthalpy 1 mol of p 4 g at 300c 001 atm or 1
the electronic absorption band of a compound in solution had a gaussian lineshape and a half-width at half-height of
a uniform 345-kg beam of length 495 m is supported by a vertical rope located d 120 m from its left end as in the
a sample of helium is collected by displacing 182 mlk of water the pressure of the gas and the atmosphere are
a particular wire has a diameter of 17 mm and length of 13 m if its resistance is 15 m what is the resistivity of the
a 1750 g sample containing potassium hydrogen carbonate is decomposed by heating if the mass loss is 271g what is the
a small 300 g cart is moving at 130 ms on an air track when it collides with a larger 400 kg cart at rest after the