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Which of the following gases would have a slower effusion rate than CO2? Hint: Assume all gases are at the same temperature.

The plot below shows the distribution of molecular speeds for three different gases all at the same temperature: CH4, H2, and Kr.  These gases are marked as A, B, and C in no particular order.  Which line is most likely to represent Kr?

If you double the absolute temperature of a fixed amount of gas and quadruple its pressure, what will happen to the volume of the gas?

If you quadruple the absolute temperature of a fixed amount of  gas and double its pressure, what will happen to the volume of the gas?

Consider the phase diagram for neon: What is the normal melting point temperature for neon?

Which of the following gases would have a faster effusion rate than N2? Hint: Assume all gases are at the same temperature.

Which of the following is most likely to be a gas at room temperature?

Which of the following substances would you predict will have the lowest vapor pressure at a temperature of 300 K?        

Which of the following gases would have a faster effusion rate than CO2? Hint: Assume all gases are at the same temperature.

Put the following steps of muscle contraction in order.  Example: If you need to go through a door, then you need to turn the door knob and then open the door. So,1 turn the door knob, 2 open the door, 3, walk through the doorway.   Also, fill in the missing word(s).     __[BLANK-1]__ Myosin cross-bridges detach and reattach to active sites  __[BLANK-2]__ ACh (acetylcholine) is released from neurons – diffuses across _____[BLANK-3]_____ __[BLANK-4]__ Cycle repeats as long as Ca2+ and ATP are present __[BLANK-5]__ Ca2+ binds to troponin on actin filaments, moves tropomyosin out of the way, and exposes active sites on _____[BLANK-6]_____ __[BLANK-7]__ Ca2+ is released from _____[BLANK-8]_____ __[BLANK-9]__ Myosin _____[BLANK-10]_____ attach to actin active sites __[BLANK-11]__ Signal goes from spinal cord to motor neuron – then travels through axons to _____[BLANK-12]_____ terminals  __[BLANK-13]__  ACh binds to receptors on the _____[BLANK-14]_____ __[BLANK-15]__ Contraction – using ATP, myosin cross-bridges attach to actin and pull actin filaments toward center of _____[BLANK-16]_____ __[BLANK-17]__ _____[BLANK-18]_____ (enzyme) from sarcolemma decomposes ACh in the synaptic cleft. Contraction ends, muscles relax. Prepares fiber for next stimulus.