In the determination of Ca2+ in milk powder, 12.1 mL 0.01 M EDTA is used for 1.50 grams of sample. Which of the following is the percentage of Ca2+ in the sample? (Ca: 40 g / mol) A. 0,32 B. 0,48 C. 0,96 D. 0,16

Q: What is the concentration of a standardized HCl solution that required 50.78 mL of HCl to titrate…

A: we need to find the concentration of HCl needed for the titration

Q: What is the concentration of the H,SO4 solution? (show TO onl

A: Molarity = no. of moles/volume of solution (in L)  Number of moles = molarity x volume (in L)

Q: 12. The solubility-product constant for K2PDC16 is 6.0 x 106 (K2PDCI6 2 2K* + PDCI?-). What is the…

A: The given dissociation equation for K2PdCl6 is: K2PdCl6 (s)  <------> 2K+(aq) + PdCl62-(aq) ;…

Q: 7) Give the reaction type for each of the following reactions. (2 points each) -> a. Pb(OH) 2 (s) →…

A: The reaction Pb(OH)2 (s) → PbO (s) + H2O is a decomposition reaction. In a decomposition reaction, a…

Q: What volume of 0.480 M  KMnO4 would be required to titrate 0.43 g  of  K2[Cu(C2O4)2]⋅2H2O?

A: The balanced net reaction is given as

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A: FAS is ferrous ammonium sulphate and also known as Mohr salt. It's molecular weight is 392.14g/mol.…

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A: Given: Mixture of NaBr, NaI and NaNO3 = 0.6812g                         Mixture of AgBr and AgI =…

Q: I need help on all 3 :/

A:

Q: Calculate the concentration of CuS in a solution in which H3O+ is held constant at (Ksp (CuS) = 8.0…

A: Reactions involved:

Q: It is desired to prepare 900mL of 0.125 normal Ca(OH)2 for use in the reaction:  2HCl + Ca(OH)2 =…

A: The given data contains, Volume = 900 ml = 0.9 LNormality =0.125 N

Q: sample weight is potassium ferrioxalate find the Theoretical Mass % of Fe3+Equivalence

A: We have to find the Theoretical Mass % of Fe3+

Q: Which zinc solution is saturated?   1x10-5 M ZnCO3 (Ksp=1.0x10-10)   4.0x10-6M Zn(OH)2…

A:

Q: None

A: Please don't forget to write the answers in the desired significant figures.Note: There might be a…

Q: QUESTION 7 Chemical Equilibria In this experiment, a spectrophotometer is used to quantify the…

A: The question is based on the concept of Le-chatlier principle.  It States that when a system at…

Q: sample is potassium ferrioxalate  find and show work  Moles of Fe3+ (mol) Mass of Fe3+ (g) Mass…

A: We have to find Moles of Fe3+ (mol) Mass of Fe3+ (g) Mass % of Fe3+

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A:

Q: #13  Mass percent of asprin in tablet

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Q: What is the mass percent of Fe for each trial ?   Mass of (NH4)2Ce(NO3)6 (in 100.00 mL) =   4.5038…

A: The balanced chemical reaction between Fe2+ and Ce4+ is:   Fe2++Ce4+↔Fe3++Ce3+