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Aq is mixed with 275 ml of 0125 m naclaq what is the

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(aq) is mixed with 275 mL of 0.125 M NaCl(aq).What is theconcentration of sodium ions in the final mixed solution?Assume that volumes are additive.a.0.0859 Mb.0.156 Mc.0.164 Md.0.242 Me.0.323 M
Q.A student dissolves 1.24 x 10-3moles of NaCl in enough water to make 1.00 L of solution(density = 1.00 kg/L).What is the concentration in parts per million (ppm) ofsodium ionsin this solution?ppm = mg/L
62.(7 points) Complete the following table by filling in each empty cell with the appropriatedata.No additional work needs to be shown.There is no partial credit for each cell.SymbolChargeAtomicNumber (Z)Number ofelectronsNumber ofneutrons190Os03+10148078121Questions Requiring Calculations for Credit3.(6 points) 125 mL of 0.160 M ZnCl2(aq) is mixed with 225 mL of 0.100 M AgNO3(aq).double displacement/metathesis reaction occurs and a precipitate (AgCl) is observed.Whatis the limiting reagent and how many moles of solid form?The precipitation reaction goes tocompletion.You must show your work to receive any credit.AAnswer___________ moles AgClLimiting reagent (circleone)AgNO3ZnCl2
4.(14 points total)a.(2 points) Balance the chemical reaction betweenanhydrousNa2CO3and HCl below.you leave the spaces blank a value of 1 will be assumed.If
b.(4 points) A student dissolves 1.000 g of Na2CO3●nH2O in water and titrates the resultingsolution with 0.250 M HCl.It requires 34.50 mL of acid to reach the equivalence point.Calculate the total mass of carbon dioxide gas that will be produced during the titration.You must show your work to receive any credit.c.(8 points) Calculate n: round to the nearest whole number.You must show your work toreceive any creditMass of carbon dioxide______________ g
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Term
Fall
Professor
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Tags
Chemistry, sodium ions

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