Hi, I have a question on #31. Where does density 0.997g/ml come from? Thank you

Question

Hi,
I have a question on #31.
Where does density 0.997g/ml come from?

Thank you very much in advance!

le he approximate ng the Specific lla heat calorimeter of the solution and products is 4.20 J/g °C, amount of heat absorbed by the reaction, which can be represented by the following equation Ba(OH)2 8H2O(s) +2NH SCN(aq)Ba(SCN)2(aq)+2NH (aq) 10H.OU) 28. The reaction of 50 mL of acid and 50 mL of base described in Example 5.5 increased the temperature of the solution by 6.9 degrees. How much would the temperature have increased if 100 mL of been used in the same calorimeter starting at the same temperature of 22.0 °C? Ex plain your answer 29. If the 3.21 g of NH4NO3 in Example 5.6 wer e dissolved in 100.0 g of water under the same conditions, how much would the temperature change? Explain your answer. 30. W hen 1.0 g of fructose, CoH1206(s), a sugar commonly found in fruits, is burned in oxygen in a bomb calorimeter, the temperature of the calorimeter increases by 1.58 °C. If the heat capacity of the calorimeter and its contents is 9.90 kJ/oC, what is q for this combustion? 31., When a 0.740-g sample of trinitrotoluene (TNT), C7HsN206, is burned in a bomb calorimeter, the temperature increases from 23.4 °C to 26.9 °C. The heat capacity of the calorimeter is 534 J/oC, and it contains 675 mL of water How much heat was produced by the combustion of the TNT sample? 32. One method of generating electricity is by burning coal to heat water, which produces steam that drives an electric generator. To determine the rate at which coal is to be fed into the burner in this type of plant, the heat of combustion per ton of coal must be determined using a bomb calorimeter. When 1.00 g of coal is burned in a bomb calorimeter (Figure 5.17), the temperature increases by 1.48 °C. If the heat capacity of the calorimeter is 216 kJ/°C, determine the heat produced by combustion of a ton of coal (2.000 × 103 pounds) of fat recommended for someone with a daily diet of 2000 Calories is 65 g. What percent of th his amount of fat if the average number of Calories for fat is calories in this diet would be supplied by t 9.1 Calories/g? A teaspoon of the carbohydrate sucrose (common sugar) contains 16 Calories (16 kcal). What is the ma teaspoon of sucrose if the average number of Calories for carbohydrates is 4.1 Calories/g? What is the maximum mass of carbohydrate in a 6-oz serving of diet 34. one 5. an if the average number of Calories for carbohydrates is 4.1 Calories/g? . A pint of premium ice cream can contain 1100 Calories. What mass of fat, in grams and pounds, m in the body store an extra 1.1 × 103 Calories if the average number of Calories for fat duced

Explanation / Answer

average density of water in the range of 26.9 to 23.4 0C is 0.997 g/ml. The density of water changes with temperature. For the sake of convenience, we usually consider it equal to 1 g/ml. Water has the highest density at Temperature of 4 0C which is 1 g/ml. On increasing the temperature from here leads to decrease in density of water. The values of density at different Temperatures is given in steam tables and specific gravity of liquid water table.

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.