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Interpretation:
It should be determined that the amount of energy in calories which is removed when 350g of Coca-Cola cooled from room temperature to refrigerator temperature. Assuming that, Coca-Cola has the same specific heat as water.
Concept Introduction:
Temperature: It is measured of the amount of heat energy in an object, is commonly reported in Fahrenheit
Specific heat capacity: The amount of heat needed to raise the temperature of (1 gm) of a substance by
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Chapter 1 Solutions
Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
- Combustion of a fuel sample in a bomb calorimeter increases the temperature of the entire system by 5.10 °C if the calorimeter contains 1700 g of water, but only by 4.00 °C if the calorimeter contains 2200 g of water. What is the heat capacity of the dry bomb calorimeter assembly? Assume that the specific heat capacity of water is 4.18 J g–1 °C–1.arrow_forward(A) how much energy is necessary to heat 7.0 kg of water from room temperature (20 degrees Celsius) to its boiling point? (Assume no energy loss) (b) if electrical energy were used, how much would this cost at 45 cent per kWh?arrow_forwardFor ferrocene (C10H10Fe) the enthalpy of sublimation is 73.2 kJ/mol and the entropy of sublimation is 243 J/mol.K. What is the sublimation temperature of ferrocene in degrees Celsius?arrow_forward
- A person weighing 150 pounds who is running 1 mile in ten minutes, will burn 100-120 Calories. A 200 lb person uses 135-155 Cal for the same run. A)How much ATP (in grams) is needed for such a workout? The molecular weight for ATP is 507 g/mol. The standard free energy for hydrolysis of the g-phosphate group in ATP is -32 kJ/mol. 1 Cal = 1000 calories, and 1kcal = 4.184 kJ. B)How many grams of glucose is needed to supply energy for this run under aerobicand anaerobicconditions? Assume that we make 30 ATP from one glucose molecule under aerobic conditions. MW(glucose)= 180 g/mol.arrow_forwardCalculate the amount of rice bran (12.5% CP), corn (8.5% CP), soybean meal (49% CP) and copra meal (20% CP) in formulating 100 kg diet with 20% CP. Assume that the energy mixture will have a ratio of 2:1 and protein ingredients proportion is 1:3. Show your solution:arrow_forwardThe same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol) in water. He measured 10 grams of KClO3 and dissolved it in a calorimeter containing 250 g of water. The temperature drop was 3.5 K. A . What is qH2O in Joules? B. What is qdissolution in Joules? C. What is the ΔHdissolution in kilojoules per mole?arrow_forward
- A person eats a container of strawberry yogurt. The Nutritional Facts label states that it contains 240 Calories (1 Calorie = 4186 J). What mass of perspiration would one have to lose to get rid of this energy? At body temperature, the latent heat of vaporization of water is 2.42 × 10ʻ J/kg. 86.arrow_forwardCalculate the boiling point of a solution containing 12g glucose C6H12O6 dissolved in 200g of water H2O. (0.512°C - K of H-0) Answer: 100.17100arrow_forwardA 1.23 g sample of acetic acid (HC2H3O2) was burned in excess oxygen in a bomb calorimeter. The calorimeter, which alone had a heat capacity of 2.67 kJ/°C, CONTAINED 745 G OF WATER. The temperature of the calorimeter and its contents increased from 23.77 °C to 27.95 °C. What is ΔH (in kJ) for the combustion of 1.00 mol of acetic acid is 60 g/mol.arrow_forward
- In an experiment, identical heat lamps are arranged to shine on two identical containers, one containing water and the other containing, methanol, a nonpolar compound. Each liq- uid absorbed the same amount of energy minute by minute, and the change in tempera- ture over time was recorded for each molecule. The results from the experiment are illus trated in the graph below. A B 40 с temperature (°C) D 25 The heat-related temperature of water and methanol increases over time. methanol Which of the following best explains the results illustrated in the above figure? time (minutes) water 20 Water temperature increases more quickly because part of the supplied heat energy is used to transition the water molecules from a liquid physical state to a gaseous physical state, which does not occur in methanol Water temperature increases more quickly because part of the supplied heat energy is used to break the hydrogen bonds between water molecules, which do not occur be tween methanol…arrow_forwardThe ΔG°′ value for glucose-1-phosphate is -20.9 kJ/mol. If glucose and phosphate are both at 4.8 mM, what is the equilibrium concentration of glucose-1-phosphate?arrow_forwardA rescarcher studying the nutritional value of a new candy places a 4.40 g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.30 "C. If the heat capacity of the calorimeter is 45.00 kJ-K-, how many nutritional Calories are there per gram of the candy? Calories of candy: Cal/g per gramarrow_forward
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