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in a dry cell mno2 occurs in a semisolid electrolyte paste and is reduced at the cathode the mno2 used in dry cells can
you add an excess of solid mx in 250 g water you measure the freezing point and find it to be -0028 degrees celsius
you have two salts agx and agy with very similar ksp values you know that ka for hx is much greater that ka for hy
a volume of 100ml of a 00600 msolution of cl- ions are reacted with 500 m soution of agno3 what is the max mass of agcl
a typical adult bdy contais 6 liters of blood the hemoglobin content of blood is about 155g 100ml the approximately
the concentration of mg2 in seawater is 0052 m at what ph will 99 of the mg2 be precipitated as the hydroxide salt ksp
a compound with the molecular weight of 39198 was determined to be 31 hydrogen 315 phosphorous and 654 oxygenh as in
suppose that a fully charged lead-acid battery contains 150 of 500 what will be the concentration of in the battery
a chemist needs a ph 35 buffer should she use naoh with formic acid ka 18x10-4exp or with aceticacid ka 18x10-5 exp
determine the percent by mass of all elements in the compound sodium carbonate decahydrate better known as washing
what is the molar composition of the vapor in equilibrium with a boling liquid that has a composition of 60 a and 40
a student prepeares a cold pack by dissolving 30 grams of ammonium nitrate in 100 g of water at 20 degrees celcius to 0
the h per mole of cacl-810kj calculate the final temperature of an aqueous solution if 30g of cacl2 is added to 100 ml
some salts like silver chloride agcl are insoluble in water what can we conclude if anything regarding the energy
1 you have a 1340g sample of water at -30 oc and you heat it until you have gaseous water at 140 oc calculate the
a giant sequoia tree cut down in 1891 in what is now kings canyon national park northeast of los angeles contained 1342
a concentration cell consists of two snsn2 electrodes the electrolyte in compartment a is 013 m snno32 the electrolyte
a solution containing 3301 g of an unknown substance in 5000 g of benzene has a freezing point of 130degca what is the
determine the h oh and the ph of a solution made by dissolving 103 g of naoh a strong base in water to make exactly 150
write a balanced chemical equation for the reaction between cn - and mno4- in basic solution the skeleton ionic
researchers have created artificial red blood cells these artificial red blood cells are cleared from circulation by a
what is the maximum volume of 60 m naoh that can be added to 100 ml of a buffer solution that is initially 100 m in
what is the common purpose of these precautions flaming the apparatus before running the reaction using a drying tube
1 indicates bond types give the range for a a nonpolar covalent bond b a polar covalent bond c an ionic bond2 name and