An active ingredient has a relative molecular mass of 498. What mass of this active ingredient is required to make up 345 cm3 of a solution with a concentration of 0.03 mol dm−3? Give your answer in grams and approximate to 2dp:

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Q: Describe the preparation of I L of 5moll-2 HCL colution from concentrated acid/d=1019 g/m²: 37.500)

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Q: C. A student preparing this solution weighs 1.4802 g M9SO4•7H2O directly into the 50.00 mL…

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Q: The pNO; in a solution that is 567 ppm in Zn(NO;)2 and 3.0 x 10-3 M Cd(NO3)2 are ....... A.W Zn=65,…

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Q: If the concentration of Sn2+ ions in a solution of Sn(OH)2 was measured to be (1.41x10^-3), what is…

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Q: The mobility of an ethanoate (acetate) ion in aqueous solution at 25 °C is 4.24 × 10−8 m2 s−1 V−1.…

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Q: Calculate the ionic strength of a solution that is 0.040 mol kg−1 in K3[Fe(CN)6](aq), 0.030 mol kg−1…

A: Given  concentration of K3[Fe(CN)6] (aq) = 0.040 mol/kg  concentration of KCl (aq) = 0.030 mol/kg…

Q: 1. Determine the mass of sodium chloride required to prepare 400 ml of a Mueller-Hinton broth…

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Q: A student measures k for a certain blue to be 400.4 M1 at 560 nm. What is the molarity of the dye in…

A: The relationship between molarity and absorbance is as follows,

Q: 7) How do you separate diffusion current (ia) from kinetic current (i) in a polarographic…

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Q: A lump of sucrose of mass 10.0 g is suspended in the middle of a spherical flask of water of radius…

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Q: 1. Calculate the Ksp of the following aqueous solutions a) 3.60x10-5M Ag2CO3 b) 4.30x10-3M of Ag+…

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Q: Laura and Sebastian create an aqueous solution of Ba(OH)2 by pipetting 25.00 mL of 0.0970 M Ba(NO3)2…

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Q: In a sample digested with phosphoric acid, it was found that analysis of calcium reflects less…

A: Phosphoric acid is H3PO4 which is a triprotic acid that is dissociated to give 3 H+(aq) and…

Q: Write the relevant chemical reaction and mass-balance expression for 0.1 M NaCl.

A: Ans : Mass balance Reaction :             Nacl (s)      →  Na+(aq)   +   Cl-(aq) To following the…

Q: What is the ratio strength (w/v) of a solution made by dissolving 16 tablets, each containing 1.5 g…

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Q: Describe the effect, if any the following procedural errors would have on the calculated value of…

A: Hello there,The following part of the question looks like incomplete.Please verify and repost it…

Q: Construct the expression for Ksp for solid Bas(PO4)2 in aqueous solution. Ba:(PO:):(s) = 3 Ba2"(aq)…

A: • The dissociation of the sparingly soluble salt Ba3(PO4)2 is,    Ba3(PO4)2(s) ⇌ 3 Ba2+(aq) + 2…

Q: a) If 1.17 g of sodium chloride (NaCl) is dissolved in water and made up to 100 cm³ of aqueous…

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Q: Discuss the advantages, disadvantages, and limitations of the technique of cyclic voltammetry in…

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Q: When 0.650g of compound W is dissolved in 27.8g biphenyl (Kf= 8.0oC/ molal, fp= 70.0oC), the fp of…

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Q: Calculate the fraction of intact H2PO3 molecules in an aqueous solution of phosphorous acid at (a)…

A: given:  pH for part (a) = 5 pH for part (b) = 9 The reaction during the dissocition of acid is:…

Q: Discuss three practical applications of solvent extraction in analytical chemistry

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Q: Explain how to obtain larger particles based on the relative supersaturation

A: This explained by von weirmarn equation...

Q: Show how the composition of an aqueous solution that contains 30 mmol dm-3 tyrosine varies with pH.

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Q: how many grams of BaF2 molar mass= 175.337 will dissolve in 300 mL of 0.30 M NaF solution? the ksp…

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Q: What is the change in chemical potential of glucose when its concentration in water at 20.0 °c is…

A: Chemical Potential :  It tells about the ability of a molecule to perform work. Chemical Potential…

Q: How many grams of BaF2 (molar mass = 175.337) will dissolve in 700 mL of 0.10 M NaF solution? The…

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Q: How many grams of bismuth (III) sulfide (Bi2S3, MM = 514.16 g/mol) will exactly dissolve in 500.0 mL…

A: The solubility reaction of Bi2S3 is given by  Bi2S3 (s) -----> 2 Bi3+ (aq) + 3 S2- (aq) Assuming…

Q: If the concentration of Sn2+ ions in a solution of Sn(OH)2 was measured to be (1.24x10^-3), what is…

A: Given, concentration of Sn2+  = 1.24 × 10^(-3)...