Amolecule, such as h2o, that has a positive end and a negative end is called a molecule.

            Such kinds of molecules having a positive end and a negative end is known as polar molecule. In case of water, hydrogen atom has partial positive charge and oxygen atom has a partial negative charge. This is due to differences in their electronegativity, because a covalent bond is existed between oxygen and hydrogen but the bonded electrons are attracted more towards oxygen as compared to hydrogen. Thats why H2O is a polar molecule.

Answer:

9.9 years

step-by-step explanation:

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

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