NOTE: 1 J = 1 N.m = 6. Using dimensional analysis, show how 0.082057 mol. K Significant figures note: the last digit on both values has been rounded. 1 kg.m² دی , and L 1 Pa = 1 • atm N m² is equal to 8.3145 or 1 kg m.s J mol - K

9:08 PM ☹ & = ikf MB² = 5.12 °C/m 19²2- (-130%) = AT £ 1Jf=18492 ug°c = (5.12 L/m) n = 3.611 ●●● 25 Question 9 of 14 | g 1 3 4 6 7 9 +/- 0 Tap here or pull up for additional resources 8 What mass in grams of NaCl would need to be added to 2051 g of water to increase the boiling temperature of the solution by 1.500 °C? (Kb for water is 0.5100 °C/m) X C 20% 0 Submit x 100

What is the boiling point of the automobile radiator fluid prepared by mixing 1.00  L of ethylene glycol (HOCH2CH2OH, density = 1.114 g/mL) with 1.06  L of water (density = 1.000 g/mL)?The Kb of water is 0.520°C/m.

(ans: -7.50 x 10 ) one mole of sucrose). Imol %3D 9reaction=n AH %3D %3D (ans: -5.64 x 10 kJ/mol) Calcium chloride and sodium hydroxide react according to the equation: CaCl(aq) + 2 NaOH(aq) → Ca(OH),(s) +2 NaCl(aq) What volume of 2.00 M NaOH would be needed to react with 50.0 mL of 1.50 M CaCl,? a, 017 (ans: 75.0 mL) b) When 50.0 mL of 1.50 M CaCl, solution and 80.0 mL of 2.00 M NAOH solution (i.e., 5.0 mL more than calculated in part (a)) both initially at 22.3°C are mixed in a coffee-cup calorimeter with a calorimeter constant of 12.8 J/ C, the temperature fell to 20.0°C. If the density of the reaction mixture is 1.03 g/mL and its specific heat 3.94 J/g°C, calculate the heat absorbed hv the reaction. (ans: 1.24 x 103) c) Calculate AH (in kJ per mole of Ca(OH)2 formed) for the reaction. (ans: 1.6 x 10' kJ/mol)