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what is the total number of lone pairs on the central atom in the correct or best lewis structure of the following
a chemist needs to determine the concentration of a solution of nitric acid hno3 she puts 725 ml of the acid in a
a buffer solution is prepared by mixing 823 ml of 00329 m butanoic acid with 214 ml of 0661 m sodium butanoatea table
if a pregnant woman should be exposed to no more than 20 rad and a radiation source gives 38 rad at 193 cm what is the
suppose that you have 0500 l of each of the following solutions and an unlimited supply of water kb 63times10-5 for
one compound contains an amino group with a pka of 88 and one other ionizablegroup with a pka of 5to 7to 100 ml of a 02
carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid what is the molar
when toluene is used in free radical bromination a very small amount of product is formed that contains only carbons
what volume of h2g at stp is produced whennbsp104 g of mg is reacted with hcl according to the following
if 0043 g of beryllium hydroxide beoh2 is dissolved in sufficient water to make 500 ml of solution what is the
you react an excess of hydrogen gas with 800 get of oxygen nbspgas to format water what mass of water is formed
when ethane is reacted with oxygen in the air the products are carbon dioxide and water this process requires moles
yeast is used as a leavening agent in bread making the yeast metabolizes with the natural carbohydrates in the flour
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
after he conducted cathode ray tube experiments proving the existence of negatively charged particles we now call
show the molecular formula for each arranged from weakest to strongest strengtha acids sulfuric acid bicarbonate ion
pick one ofnbspthe transition element and talk about the elements physical chemical properties preparation discovery
1 given aqueous solutions of 01 m weak acetic acid ch3cooh pka 472 and 01 m so- dium acetate nac2 h3o2 calculate
when a volcano erupts 175g of steam at 100degc is released how many kilojoules are lost when the steam condenses cools
2nocl 2no cl2nbspnbsp k16 x 10-5mcalculate the equilibrium concentrations of all species which result from an
what is the pressure in millimeters of mercury inside a container of gas connected to a mercury-filled open-end
a rolaids tablet contains calcium carbonate for neutralizing stomach acid if a rolaids tablet neutralizes 2465 ml of
a 100 ml sample of calcium hydroxide solution required 2685 ml of 0225 m hydrochloric acid for neutralization calculate
in the following reactions identify the oxideized species reduced species oxidizing agent and reducing agenta cl2 2ki