Question

select the correct answer.

harry reads that a particular element has an atom with a mass of 0.000000000012 grams. what is the weight of the atom expressed in scientific notation?

\\(1.2 \times 10^{-9}\\) grams
\\(1.2 \times 10^{-11}\\) grams
\\(1.2 \times 10^{11}\\) grams
\\(1.2 \times 10^{12}\\) grams

Explanation:

Identify the given standard notation value

Using the Standard Notation knowledge point

$$ \text{Mass} = 0.000000000012\text{ grams} $$

Count decimal shifts to form the coefficient

Using the Scientific Notation knowledge point

$$
LATEXBLOCK0
$$

Determine the exponent and final expression

Using the Scientific Notation knowledge point

$$
LATEXBLOCK1
$$

Answer:

• (A) \(1.2 \times 10^{-9}\text{ grams}\)
• (B) \(1.2 \times 10^{-11}\text{ grams}\) (Correct answer)
• (C) \(1.2 \times 10^{11}\text{ grams}\)
• (D) \(1.2 \times 10^{12}\text{ grams}\)