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What is the boiling point of 0.0585 m aqueous calcium chloride, CaCl2? Use the formula for the salt to obtain i. The boiling point of water is 100.0 °C and the Kb=0.512°C/m for water. Express your answer to two decimal places.
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- Beakers (a), (b), and (c) are representations of tiny sections (not to scale) of mixtures made from pure benzene and pure water. Select which beaker gives proper representation of the result when the two pure substances are mixed.What is the freezing point of 0.0225 m aqueous calcium chloride, CaCl2? Use the formula for the salt to obtain i. Freezing point of water is 0.000 °C and Kf=1.858°C/m for water. Express your answer to three decimal places.A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration of 25.·gL−1 . The geochemist also measures the concentration of salt in several nearby non-isolated lakes, and finds an average concentration of 4.2·gL−1 . Assuming the salt concentration in Lake Parsons before it became isolated was equal to the average salt concentration in nearby non-isolated lakes, calculate the percentage of Lake Parsons which has evaporated since it became isolated. Round each of your answers to 2 significant digits.
- A group of students were weighing some CaCl2(s) but they forgot to record the mass. They know that they had 50 mL of water (you can assume water has a density of 1.00 g/mL) in the 1st test tube and the freezing point for the water by itself was measured to be -0.01 °C. When they added the CaCl2(s) to 50 mL water in a 2nd test tube and measured the freezing point with the same thermometer they got a freezing point of -1.868°C. The Kf value for water is 1.858 °C/m. What was the mass of CaCl2(s) that the students added to the 2nd test tube? Question 3 options: 3.09 1.09 1.87 2.03 2.63 1.61 0.86 2.24 2.87 2.40 1.25 1.42A glucose solution contains 55.8 g of glucose (C6H12O6) in 465 g of water. 1. Calculate the freezing point of the solution. (Assume a density of 1.00 g/mL for water.) Express your answer using three significant figures. 2. calculate the boiling point of the solution.Express your answer using three decimal places.Directions Through the given situations below, answer the following questions 1 A mixture of monosodium glutamate, white sugar, salt and benzoic acid is to be melted by a group of Grade 7 students to determine the behavior of the mother during melting Predict how the mixture will look like as it is being heated. Explain your answer SUBSTANCE Sali White sugar Monosodium glutamate Benzoic acid MELTING POINT 801 C 186 C 232 C 122 C 2. Theo wants to observe what will happen to substance X (melting point is at 78 C) after heating it on an evaporating dish. After heating for a few minutes, substance X starts
- A solution of 5.00% glucose (C6,H12,O6) solution is used in many medical settings. If you are given 75.0 g of this solution, how many grams of glucose did you receive? Write the value to the correct significant figures.A saline solution contains 0.92% (w/v) NaCl in water. What volume (in mL) of the saline solution must be administered to the patient in order to deliver 1.2g of NaCl? Only report the numeric part of your answer, in mL. Do not include the actual unit.Calculate the pHpH of each solution. Part A Part complete [OH−][OH−] = 3.8×10−11 MM Express your answer using two decimal places. pHpH = 3.583.58 SubmitPrevious Answers Completed Part B [OH−][OH−] = 5.6×10−3 MM Express your answer using two decimal places. pHpH = nothing SubmitRequest Answer Part C [OH−][OH−] = 9.8×10−12 MM Express your answer using two decimal places. pHpH = nothing SubmitRequest Answer Part D [OH−][OH−] = 9.4×10−4 MM Express your answer using two decimal places. pHpH = nothing SubmitRequest Answer Provide Feedback
- The solubility of CoCl2 in water is 52.9 g of CoCl2 per 100 g of water. 105.3 g of CoCl2 are added to 173.6 g of water. How many grams of CoCl2 dissolved in the water (write your answer with three significant figures)? Is this solution saturated or unsaturatedDetermine the amount of potassium chloride in each solution. 18.9 g of a solution containing 1.12 % KCl by mass Express your answer in grams using three significant figures. 29.2 kg of a solution containing 20.7 % KCl by mass Express your answer in kilograms using three significant figures. 45 mg of a solution containing 14 % KCl by mass Express your answer in milligrams using two significant figures.6.) What is the ideal body weight of an individual which is 5 feet tall? a. 170kg b. 162 kg c. 140kg d. 152 kg 7.) As a student your physical activity is considered which of the following? a. bed rest b. light c. moderate d. sedentary 8.)This element regulates several important physiologic and biochemical processes including neuromuscular excitability, blood coagulation, secretory process, membrane integrity, and plasma membrane transport a. calcium b. magnesium c. iron d. potassium 9.) A micro mineral which is an essential component of blood a. Cobalt b. chromium c. molybdenum d. iron 10.) Fiber requirements are provided by which of the following? a. Meat b. Milk c. sweets d. fruits and vegetables
