What does the number at the end of an element mean? (For example, Hydrogen-3)

Chemistry

1 answer:

Inga [223]2 years ago

4 0

Answer:

The top number is the total mass number, particles in an atom of an element that have mass are protons and neutrons.

Explanation:

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Why are all atoms electrically neutral?

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What is 9.6 times 10 to 7th power divided by 3.0 times 10 to the 5th power?

Juli2301 [7.4K]

Answer:

9.6 times 10 to 7th power divided by 3.0 times 10 to the 5th power can be written as follow. The final answer is 320.

Explanation:

When the divide 9.6 by 3.0 we get 3.2 and

$\frac{10^{a}}{10^{b}}=10^{(a-b)}$

So the calculation is as below.

$\frac{9.6\times 10^{7}}{3.0\toimes 10^{5}}=3.2\times 10^{(7-5)}\\\frac{9.6\times 10^{7}}{3.0\toimes 10^{5}}=3.2\times 10^{2}\\\frac{9.6\times 10^{7}}{3.0\toimes 10^{5}}=3.2\times 100\\\\ \frac{9.6\times 10^{7}}{3.0\toimes 10^{5}}=320$