PHY-102 Exam 2 (Questions with Answers) - GCU

PHY-102 Exam 2 (Questions with Answers) - GCU. Which process supplies the energy converted to electrical energy in a nuclear power plant?  The release of steam from underground hot springs.  The fusion of small nuclei.  The fission of large nuclei.  The combustion of natural gas.  The burning of coal. 2 An explosion occurs 3400m away. Given that sound travels at 340 m/s, how long will it take for the sound of the explosion to reach you?  less than a second  3 seconds  10 seconds  100 seconds 3 When ethanol (empirical formula C2H6O) burns, it combines with oxygen and forms carbon dioxide and water. Which of the following is the balanced chemical reaction for the burning of ethanol?  C2H6O + O2 → CO2 + H2O  C2H6O + 2 O2 → 2 CO2 + 3 H2O  2 C2H6O + 3 O2 → 4 CO2 + 6 H2O  C2H6O + 3 O2 → 2 CO2 + 3 H2O  C2H6O + 2 O2 → 2 CO2 + 2 H2O  4. When two light nuclei fuse together, mass  Is conserved.  Is converted to energy.  Is created from energy.  Is increased. 5 Which of the following is an example of a chemical change?  An ice cube melting.  A sheet of metal being formed into a jewelry box.  A candle burning.  A window breaking. 6 Sulfur dichloride is a cherry-red liquid. Which of the following is true about sulfur dichloride?  It is a covalent molecule with one sulfur atom for each two chlorine atoms.  It is an ionic compound with one sulfur atom for each two chlorine atoms.  It is a covalent molecule with two sulfur atoms for each one chlorine atom.  It is an ionic compound with two sulfur atoms for each one chlorine atom.  It is a covalent molecule with one sulfur atom for each one chlorine atom. 7 Oxygen-16, oxygen-17, and oxygen-18 are:  Different elements.  Different ions.  Different isotopes.  Different materials 8 Which of the following is an example of a compound?