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Category > Applied Sciences Posted 27 May 2017 My Price 5.00

Calculate the molarity of each of these solutions

 

Calculate the molarity of each of these solutions. a. A 5.623-g sample of NaHCO3 is dissolved in enough water to make 250.0 mL of solution. b. A 184.6-mg sample of K2Cr2O7 is dissolved in enough water to make 500.0 mL of solution. c. A 0.1025-g sample of copper metal is dissolved in 35 mL of concentrated HNO3 to form Cu2 ions and then water is added to make a total volume of 200.0 mL. (Calculate the molarity of Cu2.)
 
 

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Alpha Geek
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Status NEW Posted 27 May 2017 02:05 PM My Price 5.00

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file 1495896344-Answer.docx preview (213 words )
C-----------alc-----------ula-----------te -----------the----------- mo-----------lar-----------ity----------- of----------- ea-----------ch -----------of -----------the-----------se -----------sol-----------uti-----------ons-----------. a-----------. A----------- 5.-----------623------------g -----------sam-----------ple----------- of----------- Na-----------HCO-----------3 i-----------s d-----------iss-----------olv-----------ed -----------in -----------eno-----------ugh----------- wa-----------ter----------- to----------- ma-----------ke -----------250-----------.0 -----------mL -----------of -----------sol-----------uti-----------on.----------- b.----------- A -----------184-----------.6------------mg -----------sam-----------ple----------- of----------- K2-----------Cr2-----------O7 -----------is -----------dis-----------sol-----------ved----------- in----------- en-----------oug-----------h w-----------ate-----------r t-----------o m-----------ake----------- 50-----------0.0----------- mL----------- of----------- so-----------lut-----------ion-----------. c-----------. A----------- 0.-----------102-----------5-g----------- sa-----------mpl-----------e o-----------f c-----------opp-----------er -----------met-----------al -----------is -----------dis-----------sol-----------ved----------- in----------- 35----------- mL----------- of----------- co-----------nce-----------ntr-----------ate-----------d H-----------NO3----------- to----------- fo-----------rm -----------Cu2----------- io-----------ns -----------and----------- th-----------en -----------wat-----------er -----------is -----------add-----------ed -----------to -----------mak-----------e a----------- to-----------tal----------- vo-----------lum-----------e o-----------f 2-----------00.-----------0 m-----------L. -----------(Ca-----------lcu-----------lat-----------e t-----------he -----------mol-----------ari-----------ty -----------of -----------Cu2-----------.) ----------- Ja-----------n 1-----------9
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