Laura can use a toy car to demonstrate the force of gravity by doing which of these?

Chemistry

1 answer:

Brrunno [24]2 years ago

6 0

Answer:

letting the car fall down the ramp i got that right.

Explanation:

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What is used to determine the number of each atom in an ionic formula

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Answer:

The charge carried by each ion (oxidation state of each atom)

Explanation:

If we have an ionic compound and we want to write its formula, we must first know the magnitude of charge on each ion (shown as oxidation state of the atoms involved) because the magnitude of charge on each ion is eventually crisscrossed and gives the subscript (number of atoms) for each atom in the formula.

For instance, let us write the formula of calcium bromide. Ca has a charge of +2 while Br has a charge of -1. If we exchange the charges and ignore the signs such that the crisscrossed charges form subscripts we can now write; $CaBr_{2}$ .