5. Your workday is over, and you are headed to a friend's house for a barbecue. You are in charge of cooking the hot dogs. You will be using a propane gas grill. When you ignite the grill, propane (C3Hg)
reacts with oxygen (O2) to produce carbon dioxide (CO2) and water vapor (H20). (11 points)
a. Write a balanced equation for this reaction. Be sure to show your work. (8 points)

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above