100 brainliest if

what is the main difference between these two chemical formulas? (down below)
a. they represent two different substances.
b. they represent different states of the same substance.
c. they represent different elements combined chemically.
d. they represent a different number of copies of a substance.

➷ The correct answer is A. They represent two different substances.

The two substances have different chemical properties.

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if the concentration of products is decreased, the equilibrium will shift toward the products). add an inert gas (one that is not involved in the reaction) to the constant-volume reaction mixture: this will increase the total pressure of the system, but will have no effect on the equilibrium condition.

explanation:

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.