A student wants to prepare [x] M KCl (MM = 74.55 g/mol) in a 250-mL volumetric flask. How many pounds (lb) of KCl s/he needs to dissolve in water to prepare 250. mL of [x] M KCl solution? Note: 1 lb = 454 g.______________ lb KCl. Do NOT enter unit.
Read DetailsWater is a polar solvent and hexane (C6H14) is a nonpolar solvent. Which of the following correctly describes the solubility of the solute?(a) CCl4, soluble in water(b) NaHCO3, soluble in water(c) octane (C8H18), soluble in water(d) CaCl2, soluble in hexane
Read DetailsDo your work in scratch paper and make sure to include the problem #. Type your responses in the text box provided. Do not worry about the subscripts or superscripts. For example, H2O can be shown as “H2O” and Mg2+ as “Mg2+”. Consider the following precipitation reaction (unbalanced): AlCl3(aq) + LiOH(aq) → Al(OH)3(…….) + LiCl(………) A) Balanced chemical equation (molecular equation) with correct physical states [identify (aq) & (s)]: (Use solubility rules to identify the insoluble solid and aqueous solution). ______________________________________ B) Complete (or total) ionic equation (make sure to label charges correctly, wherever appropriate): ________________ C) What is/are the spectator ion(s)? ________________ D) Net ionic equation: _________________________ Solubility Rules.PNG
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