What is 18,000 expressed in scientific notation? 1.8 × 10–4 1.8 × 104 1.8 × 10–5 1.8 × 105

The scientific notation for 18,000 is 1.8 × 10-⁴

a x 10^b

where a is a number or decimal number

b = power of 10

For a numerical value of 18,000;

= 1.8 × 10⁴

Therefore, the scientific notation for 18,000 is 1.8 × 10-⁴

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explanation:

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when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.