Question

answer the following.
(a) a certain solution has a hydrogen ion concentration of 4.48 × 10⁻⁴ moles per liter. write this number in standard notation.
(b) a black rhinoceros can weigh up to 6400 pounds. write this number in scientific notation.
(a) □ moles per l
(b) □ pounds

Explanation:

Step1: Convert to scientific notation for (a)

For a number \(a\times10^{n}\), where \(1\leqslant|a|\lt10\). Given \(4.48\times 10^{-4}\) moles per L, it is already in scientific notation.

Step2: Convert 6400 to scientific notation for (b)

Move the decimal point. \(6400 = 6.4\times10^{3}\) pounds.

Answer:

(a) \(4.48\times 10^{-4}\) moles per L; (b) \(6.4\times 10^{3}\) pounds