subject

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.

ansver

Answers: 1

Show answers

Another question on Chemistry

question

Chemistry, 22.06.2019 01:30

There are main groups in the modern periodic table of elements

Answers: 1

question

Chemistry, 22.06.2019 12:00

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?

Answers: 1

question

Chemistry, 22.06.2019 12:10

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Answers: 3

question

Chemistry, 22.06.2019 13:00

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

Answers: 1

You know the right answer?

Acandy bar has a total mass of 75.0 grams. in a calorimetry experiment, a 1.0-g sample of this candy...

Questions

question

Biology, 13.12.2019 00:31

What molecule is responsible for providing information to the ribosomes where proteins are built...

question

Biology, 13.12.2019 00:31

Oil formed because: a. leaves, twigs, and tree trunks decomposed under conditions of heat, pressure, and low oxygen. b. tiny algae and...

question

Biology, 13.12.2019 00:31

On a trip to the southwest, you and a friend collect some seeds from a piñon, which is a type of pine tree. your friend also gathers a small bagful of...

question

Business, 13.12.2019 00:31

Once a firm has segmented the market, the next step is to establish the company's brand immediately decide on the "4ps" of the marketing strategy sel...

question

Engineering, 13.12.2019 00:31

Write general expressions for the electric and magnetic fields of a 1 ghz sinusoidal plane wave traveling in the +y direction in a lossless nonmagneti...

question

Chemistry, 13.12.2019 00:31

One reaction that produces hydrogen gas can be represented by the following unbalanced chemical equation: mg(s) + hcl(aq) → mgcl2(aq) + h2(g) ...

question

Social Studies, 13.12.2019 00:31

On january 1, 2019, the harold company purchased equipment at a cost of $400,000. the equipment was expected to have a service life of 10 years and a...

question

Social Studies, 13.12.2019 00:31

Okcupid reported that white men were more likely than other men to receive a reply when approaching a woman for the first time, and black women were t...

question

Biology, 13.12.2019 00:31

Which of the following is not a source of genetic variation? which of the following is not a source of genetic variation? crossover of homologous ch...

question

World Languages, 13.12.2019 00:31

If ( // fill in the condition to determine if memory has been // allocated (or eliminate this if construct if your instructor // tells you it is not n...

question

Business, 13.12.2019 00:31

On may 31 of the current year, the assets and liabilities of riser, inc. are as follows: cash $25,500; accounts receivable, $7,800; supplies, $1,15...

question

Physics, 13.12.2019 00:31

If a person is severely dehydrated you would expect to see all of the following except a. lower plasma levels b. lower immunity

question

Biology, 13.12.2019 00:31

Hydra are marine organisms that reproduce by the offspring, simply, growing out of the parent organism. the parent organism does not require a mate, a...

question

Biology, 13.12.2019 00:31

Nikhil asked 120 randomly chosenmoviegoers to watch a clip of an upcoming movie and choose the best title. the title "everything" was chosen by 36 of...

question

Business, 13.12.2019 00:31

On june 1, aaron company purchased equipment at a cost of $120,000 that has a depreciable cost of $90,000 and an estimated useful life of 3 years and...

question

Business, 13.12.2019 00:31

Tom howard and frank peters are good friends (and former college roommates). each owns investment property in the other's hometown (tom lives in kalam...

question

Business, 13.12.2019 00:31

How many of the following transactions are operating activities? a. borrowed $50,000 from the bank b. purchased $12,000 in supplie...

question

Computers and Technology, 13.12.2019 00:31

Des is a block ciper which uses 56-bit-key for encryption and decryption. suppose the attacker adopts brute-force attacks or exhaustive key search to...

question

Business, 13.12.2019 00:31

One of the seven principles of the north american model for wildlife conservation states that wildlife is an international resource. what does this me...

question

Computers and Technology, 13.12.2019 00:31

Create a program named salesletter whose main() method uses several writeline() calls to display a sales letter to prospective clients for a business...

More questions: Chemistry Another questions

Questions on the website: 13722367