(14pts) Concentration Table view List view Table 4. Concentration calculations Mass of empty evaporating dish (g) 27.074 Volume of NaCl solution (mL) 9.8 Mass of dish and NaCl solution (g) 38.050 Mass of dish and dry NaCl (g) 28.838 Mass of NaCl solution (g) 10.976 1.764 Mass of dry NaCl (g) Mass/mass percent (%) Mass/volume percent (%) Moles of NaCl (mol) Volume of NaCl solution in liters (L) Molarity of NaCI solution (mol/L) SUBMIT Total: -/42 pts

Identify the solute and solvent in each of the solutions. A. table sugar (C12H22O11)(C12H22O11) in water table sugar:   water:   B. air (a solution of 78% N2,78% N2, 21% O2,21% O2, and various other gases) N2:N2:   O2:O2:   C. a solution of 30%30% ethanol and 70%70% water ethanol:   water:   D. bronze (an alloy of 95%95% copper and 5%5% tin) copper:   tin:   E. CO2(g)CO2(g) in water CO2:CO2:   water:

Calculate the final concentration of each solution show calculations

y Song - CHEM-1405 63... pter 9 Assignment 3 Dok nt nt nces Solubility Song - YouTube % KF ezto.mheducation.com G carbonates examples - Google Search Saved M Question Determine the mass percent composition of a solution made by dissolving 21.1 g of KF in 415 g of H₂O.

III. Complete the table below. Show complete solutions. Box/Encircde your final answers reported in proper units and number of significant figures. Assume that all solutions were prepared at 25°C, and the solutes were completely dissolved. Molar masses should be based on the CHEM 18.1 Periodic Table provided in Moodle. Density values, if needed, can be found at the last page of this drill. SOLUTION DESCRIPTION MOLARITY (M) MOLALITY (m) %(w/w) 12.58 grams potassium hydroxide (KOH) dissolved in 100.00 ml ethanol Ethanolic КОН ABOGA (assume that the amount of solute has no effect to the volume of the solution)

True or false: The mass of K2Cr2O7 (molar mass= 294.19 g/mol-1) needed to make 235 mL of a 0.170 M solution, is 117 g. A) true B) false

Please don't provide handwritten solution ....

Please answer number 7, letters d and e only. Thank you

2 students make solutions of CuCl2.2H2O using 25-mL volumetric flask. Student A weights out 2.489g of solid, and student B weight out 1.867g. a.) Briefly give the steps they follow to make the solid into a solution using the 25-mL volumetric flask.

101 Chem101 O A useful guide for studying : C x * Chem101 101 Chem101 tps://app.101edu.co Question 8 of 12 What is the concentration in molarity of an aqueous solution which contains 1.69% by mass acetone (MM = 58.08 g/mol)? The density of the solution is 0.971 g/mL. %3D