Which is not a way to change the rate of a chemical reaction?
a.) change the surface area of the reactants
b.) change the temperature of the reactants
c.) include a catalyst
d.) change the beaker it's being mixed in
e.) change the concentration of the reactants

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d