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Cheetas are the fastest land mammals and are capable of sprinting at 27.8 m/s in short bursts. How long would it take a cheetah to run the length of a 100 yard football field running at this top speed, assuming 1 yard is 0.914 m?
Exactly 500 cubic centimeters of a gas at 1 atmosphere and 0 degrees Celsius weighs 0.581 grams. The composition of the gas shows it to be composed of only carbon and hydrogen, the carbon being 92.24%. What is the molecular formula of this gas
Which of the following is a homogeneous mixture? Which of the following represents a chemical change, rather than a physical change? Which of the following pairs of symbol & element is incorrect?
Barium sulfate is a very insoluble compound. Please give reasons for compounds like barium sulfate or barium phosphate to be insoluble
A 16 ounce specialty coffee drink contains 200 mg caffeine. If all the caffeine is extracted and dissolved in an equal amount of water, what is the pH of the solution? What is the percent ionization
a tank of compressed o2 gas is 6.00 ft high and has a diameter of 8.00 in. the tank is filled with o2 to a pressure of
the question states the distribution coefficient for caffeinein dichloromethane and water is 4.6. assume that your 100
Using graphical techniques, calculate the distribution (i.e., the fraction) of chlorendic acid ( in uncharged, mono-anionic and di-anionic forms) at pH 3.5,5.0, and 7.5.
A researcher attempts a substitution reaction with two different reagents, water or hydroxide ion, to see which route is better. Draw the major,
Calculate the work done in joules by the reaction when 0.35 g of Na reacts with water to form hydrogen gas at 5°C and 2.5 atm. 2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g)
Dry air is bubbled through 25 liters of water at a rate of 15 liters (STP)/min. The air leaving the liquid is saturated with water at 25 degrees Celsius and 1.5 atm. How long it will take for all of the water to vaporize.
Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2CIO2(aq) + 2OH-(aq) --> (aq) + (aq) + H2O(l). If the initial rate of disappearance of chlorine dioxide is 0.230 M/s, what is the in..
Calculate (approximate) the pH of a 0.30M solution of ascorbic acid. Must use an ICE table (Initial Concentration, Change in Concentration, Equilibrium Concentration) and the quadratic formula unless the "x is small" approximation can be used.
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