6. Described what energy transformation happens in the following example based on the idea of conservation of energy
a. car tire heats up when brake is applied |
b. paper is burnt
c. food is eaten and stored in the cell as fat
d. electricity used to turn on a light bulb
e. electricity is used to heat up a stove

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.

Which of the following isotopes has the same number of neutrons as phosphorus-31?