What parameter must remain the same for k to be a constant in the rate law equation?

temperature
pressure
volume
activation energy

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

Gwhich r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? which r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? −ch2−oh −ch2−o||c−nh2 −ch2−coo− −ch2−ch2−ch2−ch2−n+h3

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .