Reaction rate depends on how many molecules come into contact with each other with enough energy to react. how would you increase the number of molecules that come in contact with each other in a reaction between gases? a. increase volume b. increase pressure c. decrease pressure d. decrease temperature

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

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