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a liquified mixture of n-butane n-pentane and n-hexane has the following composition in weight percentn-c4h10 50n-c5h12
a 550 kg man is ice-skating due north with a velocity of 590 ms when he collides with a 360 kg child the man and child
what weight of sodium carbonate na2co3 and sodium bicarbonate nahco3 are required to make 500 ml of 02 m buffer ph 1070
the pendulum in the figure consists of a uniform disk with radius r 150 cm and mass 420 g attached to a uniform rod
how is the effect of a catalyst observed and described qualitatively in enzymatic catalysis
an athlete has a large lung capacity 70 l assuming air to be an ideal gas how many molecules of air are in the athletes
a student preapred a stock solution of the assigned compound by weighing 2345 grams of cuno32 6h20 nickelii nitrate
which single step in the chemical reaction described below will most greatly assist you in understanding and
a uniform 76 kg ladder is leaning against a frictionless vertical wall with which it makes a 15 deg angle the
draw the molecular structure of 22-dimethylbutane and 23- dimethylbutane 2-methylpentane 3-methylpentane and
all matter posseses wave properties a rock weighing 79442grams going 60 miles per hour calculate the wavelength in
how many atoms are contained in a block of aluminum metal measuring 8 mm x 5 mm x 12 mm the density of aluminum is 27
the density of gold is 193 gcm3 a 34 mg piece of gold is hammered into a square that is 86 x 10-6 cm thick what is the
the full diameter of a wheel is 99 cm and its rotational inertia is 61kg m2 what is the minimum mass it could have how
the following data have been obtained for oxygen gas at 27315k calculate the best value of the gas constant r from them
what are the possible values of n and m the principal and angular momentum quantum numbers for an electron in a 5d
explain how and why the aqueous solubilitycwsat and vapor pressure pv for phenol differs when its pure natural state
compute the number of electrons in a flake of pure gold valued at 015 assume that the price of gold is 17620troy oz 1
a sample of 13 g of nitrogen can be combined with 14857143 g of oxygen to form nitric oxide gas no what mass of oxygen
a 0250-kg piece of aluminum that has a temperature of -158 degc is added to 14 kg of water that has a temperature of 26
if a hydrogen-like atom in the ground-state is excited with a wavelength of 39721nm how much energy has been absorbed
a string wrapped around a peg diameter200 cm along the axis of a top is pulled with a constant tension of 592 n
what volume of glacial aceic acid 18m and what weight of sodium acetate trihyddratech3coona3h20 are required to make
what is the molarity of the concentration hcl concentrated hcl is 372 by mass how did you find this value using the
a 10-m long plank with a mass of 15-kg is supported at each a 70 kg person stands on the plank between the supports if