Chemistry, 19.12.2019 19:31 challenggirl
Acandy bar has a total mass of 75.0 grams. in a calorimetry experiment, a 1.0-g sample of this candy bar was burned in a calorimeter surrounded by 1000g of water. the temperature of the water in contact with the burning candy bar was measured and found to increase from an initial temperature of 21.2c to a final temperature of 24.3c.
a. calculate the amount of heat in calories release when the 1.0-g sample burned.
b. convert the heat in calories to nutritional calories and then calculate the energy content (fuel value) in cal/g.
c. calculate the total caloric content of the candy bar in calories.
Answers: 1
Chemistry, 22.06.2019 11:20
Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.
Answers: 2
Chemistry, 22.06.2019 13:00
6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.
Answers: 1
Chemistry, 22.06.2019 16:30
How many grams of mgbr2 are needed to produce 75g or metal?
Answers: 1
Chemistry, 22.06.2019 17:30
Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world
Answers: 3
Acandy bar has a total mass of 75.0 grams. in a calorimetry experiment, a 1.0-g sample of this candy...
Mathematics, 24.11.2020 07:00
Social Studies, 24.11.2020 07:00
Chemistry, 24.11.2020 07:00
Mathematics, 24.11.2020 07:00
Spanish, 24.11.2020 07:00
Mathematics, 24.11.2020 07:00
Computers and Technology, 24.11.2020 07:00
Mathematics, 24.11.2020 07:00
Biology, 24.11.2020 07:00