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- Which one of the following is not a chemical change ? A. Burning of coal in airB. Fermentation of sugarcane juiceC. Cracking of petroleumD. Crystallization of table salt from sea water10. Please help with this question, thank you so much!!The specific heat capacity of element Y is 0.8 cal/goC. If 40 calories of heat are added to 10 grams of element Y, much the temperature then increases by ______ oC .
- 3. The amount of heat required to change ice to liquid water is ? A. 344 Btu B. 144 Btu C. 114 Btu D. 214 BtuWhich of the following types of energy is a form of potential energy? a. electrical energy b. sound energy c. temperature d. chemical energy e. thermal energyThe energy change that occurs when an object moves from one position to another due tothe force of gravity is best characterized by which one of the following statemets? Select one: a. Kinetic energy is converted to mechanical energy. b. There is no change in energy. c. Potential energy is converted to kinetic energy. d. Kinetic energy is converted to thermal energy. e. Potential energy is converted to thermal energy.
- 1. What would happen to an objects potential energy as it begins moving? Potential energy would remain the same O Potential energy would decrease Potential energy would increase Potential energy would disappear13. A student takes 22 grams of an unknown metal places them into a boiling water bath She leaves the pellets in the bath for 15 minutes to make sure that they are at a steady temperature. She then pours the into a beaker containing water and records her data on the data table below Mass of Metal 22g Initial Temperature of Metal 100 Mass of water 90g Initial Temperature of Water 23 C Final Temperature of Water and Metal 28 C a. How much energy did the water gain? b. What is the specific heat of the metal? Enter both final answers5. Comparison, determine if it is greater than, less than, or equal.
- 6. Boiling water on the stove for cooking can be classified as a(n) process. endothermic exothermic automatic synthetic43. Use the information below to answer the question. * Row A. B. C. D. O A E, (kJ) O O D Reactants The reaction represented in the diagram above is included as a term in the balanced equation, it would be a The statement above is completed by the information in row Reaction progress i exothermic exothermic endothermic endothermic Products ii reactant product reactant product . and if the energy was iiThe answer is incorrect, please let me know the correct answer please. Please have correct sig figs