giycol, nas the 21602 The radiator ed in most cars is a half-and-half mixture of water and antifreeze. Part A What is the freezing point of radiator fluid that is 50% antifreeze by mass? K¢ for water is 1.86 °C/m. Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) HÀ ? Value Units
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part A 7
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- A student followed the procedure in this experiment, using 50.00 mL of 2.00 molar HCl and 51.00 mL of 2.00 molar NaOH both solutions having an initial temperature of 22.7 oC. After mixing, a maximum temperature of 32.2 oC is measured. The final mass of the mixture was found to be 104.84 grams. For this problem, assume the specific heat of the solution is 4.18 J/g oC. Report all answers with the proper number of significant figures. What is the heat transferred by this reaction, in Joules?The ionic salt KBr is dissolved in water, much like the experiments given in the simulation. A mass of 68.0 g of salt is added to 100. g of water. Both start at a temperature of 23.0 degrees * C . Delta H soln for KBr is 8.00kJ / m * o * l . Given this information, calculate the final temperature (T f ).What is the boiling point of the automobile radiator fluid prepared by mixing 1.11 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.
- A certain liquid X has a normal boiling point of 107.80°C and a boiling point elevation constant Kb=1.02·°C·kgmol−1. A solution is prepared by dissolving some glycine (C2H5NO2) in 800.g of X. This solution boils at 109.1°C. Calculate the mass of C2H5NO2 that was dissolved. Round your answer to 2 significant digits.The solubility of Fe(OH)2 in water at 25°C is measured to be 5.2x10^−4gL. Use this information to calculate Ksp for Fe(OH)2 Round your answer to 2 significant digits.A chemistry student needs 25.0 g of acetone for an experiment. He has available 1.2 kg of a 21.2% w/w solution of acetone in chloroform. Calculate the mass of solution the student should use. If there's not enough solution, say no solution. Round to 3 significant digits.
- Complete the spaces in the sentences given below with the appropriate expressions. To obtain a cooling bath between 0-50C …………………. used. In order to obtain temperatures below 00C, ……………………. Is mostly used. With ……………………… .. the temperature can be lowered down to –770C. A temperature of –1950C can be obtained with …………… ... A.Dry ice, salt ice bath, liquid nitrogen, ice bathB.Salt ice bath, dry ice, ice bath, liquid nitrogenC. ice bath, dry ice, salt ice bath, liquid nitrogenD.Ice bath, liquid nitrogen, salt ice bath, dry iceE. ice bath, salt ice bath, dry ice, liquid nitrogenYou place 5.82 g of a liquid PEG sample at 20.5 oC into a thermally-insulated container having 54.7 g water at the same temperature, and record the final equilibrium (plateau) temperature 44.9 oC. The specific heat of water is 1.00 cal/g/oC and the specific heat of PEG is 0.498 cal/g/oC. Calculate the hydration energy (heat of hydration) for PEG in units of kcal/g (careful!). Enter the value (do not enter units) to 3 significant figures.A solution is made by mixing 212.0 mL of ethanol initially at 10.0 C with 212.0 mL of water initially at 22.8 C what is the final temperature of the solution assuming that no heat is lost? The density of ethanol is 0.789 G/mL snd the density of water is 1.00 g/mL the specific heat of ethanol is 2.46 J/g and the specific heat of water is 4.184 J/g C.
- How many liters of a 0.500 MM sucrose (C12H22O11C12H22O11) solution contain 1.7 kgkg of sucrose? Express your answer using two significant figures.The ionic salt KBr is dissolved in water, much like the experiments given in the simulation. A mass of 96.0 g of salt is added to 100. g of water. Both start at a temperature of 24.0 ∘C. ΔHsoln for KBr is 7.00 kJ/mol . Given this information, calculate the final temperature (Tf). Express your answer to three significant figures.300.00 mL of 0.200 M aqueous KOH neutralizes 150.00 mL of aqueous 0.200 M H2SO4. If the initial temperature is 22.3 C and it rises to 29.2 C determine the molar heat fro the neutralization of KOH. Express your answer kj/mole KOH. The specific heat of solution is 4.190 J/g C. Assume the density of the solution is 1.00 g/mL