Chemistry, 24.11.2020 20:40 ethanhose05

1. Calculate the amount of heat required for 25.0 grams of water to change from 10 degrees Celsius to 30 degrees Celsius. *
2 points
2090
2 points
2.50.0 grams of water at 100 degrees Celsius evaporated to water vapor
at 100 degrees Celsius. Calculate the amount of heat required for this
conversion.
113000
3. A student measured 15.0 grams of ice in a beaker. The beaker was then 2 points
placed on a hot plate where it was heated uniformly for a certain amount
of time. During the melting process of the ice, the student noted that the
temperature was at 0 degree Celsius. When all the ice converted to water,
the final temperature was also at 0 degree Celsius. How much heat was
used to melt the ice? *
Your answer
4. If 5.0 grams of water was cooled from 50 degrees Celsius to 40
degrees Celsius, then calculate the amount of heat released by the water.
2 points
209
5. A certain amount of water used exactly 84.0 Joules of heat energy to
change from 25.0 degrees Celsius to 35 degrees Celsius. How many
grams of water was used?
2 points
No

1. Calculate the amount of heat required for 25.0 grams of water to

change from 10 degrees Celsi

Answers: 2

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 10:40

Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4nh3 (g) + 5o2 (g) → 4no (g) + 6h2o (g) also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition: compound pressure at equilibrium nh3 65.1atm o2 31.3atm no 62.7atm h2o 65.8atm compound pressure at equilibrium nh3 65.3 atm o2 7.79 atm no 12.1 atm h2o 65.8 atm calculate the value of the equilibrium constant kp for this reaction. round your answer to 2 significant

Answers: 2

Answer

Chemistry, 22.06.2019 12:00

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.

Answers: 1

Answer

Chemistry, 23.06.2019 06:00

Complete the sentences to best explain the ranking.match the words below to the appropriate blanks in the sentences.a less polar bondhigher molar massion-dipole forcesstronger intermolecular forcesdipole-dipole forcesdispersion forceshydrogen bonding1. h2s and h2se exhibit the following intermolecular forces:.2. therefore, when comparing h2s and h2se the one with a has a higher boiling point .3. the strongest intermolecular force exhibited by h2o is . therefore, when comparing h2se and h2o the one with has a higher boiling point.

Answers: 1

Answer

Chemistry, 23.06.2019 08:00

Match the vocabulary terms to their definitions. 1 . a long, chain-like set of molecules made up of repeating units joined end to end polymer 2 . a hard, brittle, heat- and corrosion-resistant material made by subjecting a nonmetallic mineral mixture to intense heat ceramic 3 . a plastic with low elongations that cannot be recycled thermoset 4 . a carbon fiber embedded in a polymer resin matrix thermoplastic 5 . a plastic with high elongations that can be recycled crystal 6 . a solid form resulting from the arrangement of atoms, ions, or molecules in definite geometric patterns composite

Answers: 1

Answer

You know the right answer?

1. Calculate the amount of heat required for 25.0 grams of water to change from 10 degrees Celsiu...

Questions