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1 a centrifugal water pump with a 200 mm diameter impeller rotates at 1750 rpm its width is 20 mm and the blades are
consider a circuit in which the left half-cell was prepared by dipping a pt wire in a beaker containing an equimolar
consider the reaction as represented by the balanced equation 2caos 5cs -gt 2cac2sco2gassuming 100 mol of cao reacts
when a volcano erupts 175g of steam at 100degc is released how many kilojoules are lost when the steam condenses cools
determine the molarity of a solution that contains 1550ml of glycerol c3h8o3 d 1265gml in
the epa has determined that permissible free cyanide levels are 020ppm what mass of cyanide would this be in a 65kg
show the molecular formula for each arranged from weakest to strongest strengtha acids sulfuric acid bicarbonate ion
pick one of the transition element and talk about the elements physical chemical properties preparation discovery and
1 given aqueous solutions of 01 m weak acetic acid ch3cooh pka 472 and 01 m so- dium acetate nac2 h3o2 calculate
a rolaids tablet contains calcium carbonate for neutralizing stomach acid if a rolaids tablet neutralizes 2465 ml of
a 0025 g sample of h2o is injected into a 100 l flask at 300 degc what forms of water will be present at equilibrium
what is hydrogen bonding and how might hydrogen bonding be used to explain the substantial difference in boiling
write a rational arrow-pushing mechanism for the formation of this product when alpha-pinene is reacted with aqueous
dr pepper has 400g of sugar per 12 oz of liquid calculate the molarity of this solution put that molarity into your
why does the temperature of a solution increase if the reaction is exothermic for example in the precipitation of
mercury hg has a normal boiling point of 3567 degc and a standard heat of vaporization of 5911 kjmoldetermine what mass
calculate final ph resulting from the addition of 50 mmol of strong acid to the buffer solution made from 0150 l of 050
if you take a 100 ml portion of a 148 m ammonia solution and dilute it to a total volume of 0250 l what is the
consider a pipe with a length of 435 cm if the temperature of the air is 195 oc and the pipe is closed in one end and
a sealed container holds 100 mole of helium and 200 moles of nitrogen at 300degc when the total pressure of the mixture
a solution containing the complex formed between biiii and thiourea has a molar absorptivity of 932x103 lxcm-1xmol-1 at
consider a string with a length of 545 cm tied at both end like on a stringed instrument if the frequency of the first
one method to produce nitrogen in the lab is to react ammonia with copper ii oxide nh3g cuosnbspnbspcus h2ol n2g
please create 1 synthesis you get to choose any starting material but you should demonstrate all of the following
determine the percent yield of barium sulfate obtained 49852g when 1000 ml of a 02516m aqueous barium chloride is