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1a threatening note written on 85x11 inch paper is pinned to the door of a physics professor the perpetrator left in a
a series ac circuit contains a 190 ohms resistor a 140 mh inductor a 450uf capacitor and an ac power source of voltage
light of wavelength 700 nm is incident on the face of a fused quartz prism n 1458 at 700 nm at an incidence angle of
a gaseous compound containing hydrogen and carbon is decomposed and found to contain 8563 c and 1437 h by mass the mass
a 147 g of ice is placed into 324 g of water calculate the temperature change in the water upon complete melting of the
a dipole consist of two charges of opposite sign and each charge has a magnitude 720e-18c they are separated by
lead is a toxic metal that affects the central nervous system a pb-contaminated water sample contains 0011 pb by mass
a 458 ml sample of a 58 m kno3 solution is diluted to 100 l what volume of the diluted solutions contains 150 g of
consider the dissolution of magnesium s in an aqueous hydrochloric acid solution what minimum amount of 185 m
a small light cylinder and a large heavy cylinder are released at the same time and roll down a ramp without slipping1
what is the molarity of zncl2 aq that forms when 150 g of zinc completely reacts with an aqueous solution of copper ii
problem 4 an inorganic chemist who studies the reactions of phosphorus halides mixes 0105 mol of pcl5 with 0045 mol of
when 588 g of cao s is completely dissolved by hbr aq how many grams of calcium bromide are formed in
the objective lens of a certain refracting telescope has a diameter of 590 cm the telescope is mounted in a satellite
100 ml of a buffer that consists of 020 m nh3 and 020 m nh4cl is titrated with 25 ml of 020 m hcl calculate the ph of
inside the container is an ideal gas at 100 200 and 100 what will the pressure inside the container become if the
e fraction of water in a solution that is 333 by mass ethylene glycol the molar mass of ethylene glycol hoch2ch2oh is
an antacid tablet requires 2582 ml of a 200 m hcl to titrate to its equivalence point what volume in ml of stomach acid
what is the ph of a solution formed by mixing 1250 ml of a 0250 m hcl and 750 ml of a 0500 m
what is the fraction of association alpha for the following potassium propionate solutions ignore activities the ka
a 15 l acid solution contains 35g total of hcl and hbr the ph of the solution is 240 what are the masses of hcl and
when alkynes are treated with sodium metal na in liquid ammonia sodium acts as a a bronsted acid b bronsted base c
how much pv work is done in kilojoules delta e if 895 g of ethylene and 125 g of hcl are allowed to react at