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140 moles of gas are in a 800 liter tank at 210 celcius calculate the difference in pressure between methane and an
why is the h-o-h bond angle in a water molecule h2o smaller than the h-c-h bond angles in methane
describe the reaction as a balanced chemical equation that occurs when methane which is a natural gas ch4 is burned in
the charge on the phosphate ion is 3- po43- the formula for phosphate of chromium is crpo4 what is the charge on the
a process takes place at constant pressure the volume changes and the temperature increases by 870oc the heat capacity
a sample of poylethylene is found to have an average molecular weight of 32x106 estimate the root-mean-square
evaluate reversibility of a process where an ideal monoatomic gas is first slowly compressed 10-fold by a gradually
compare a refrigerator set at 2 oc and a freezer set at -18 oc both of which are operating in the room with temperature
calculate total and individual w q u h and s of an otto engine operating on stoichiometric ethanol - oxygen gas mixture
in the actual combustion of benzene in an engine the af ratio was 121 calculate the analysis of the wet product of
liquid hexane c6h14 burns in oxygen gas to yield carbon dioxide and water what is the minimum mass of oxygen required
what is the theoretical yield of vanadium that can be produced by the reaction of 40 g of v2o5 with 40 g of calcium
which class of materials biological organisms bioogical chemicals or non-biological chemicals react most dramaticallyto
could temperature amount of water or any other factors effect the ph levels of two separate samples of neutral
a 220g sample of an unknown acid empirical formula c3h4o3 is dissolved in 10 l of water a titration required 250 ml of
a 1000 ml of 100 mm phosphate buffer ph 75 pka2 72 you are provided with 0200 m koh and 0100 m kh2po4 solutions
describe the preparation of 1 liter of a 075 m acetate buffer ph 450 starting from a 150 m solution of acetic acid and
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to obtain a 180 wv solution of copper sulfate cuso4 mw 160 when only the crystalline salt is available cuso4 x 5h2o mw
5 ml of acetic anhydride and 5 drops of phosphoric acid is added to 2 g of salicylic acid calculate the molar excess of
for the following combination of reactants enter the formulae of the products in the space provided and give their
oxygen masks for producing o2 in emergency situations contain potassium superoxide kp2 it reacts with co2 and h2o in
sand consist mainly of silicon dioxide when sand is heated with an excess of coke carbon pure silicon and carbon
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which element will display an unusually large jump in ionization energy values between i3 and i4 its third and forth