Question

1. there are 26,800,000,000,000,000,000,000 helium atoms in 1.00 l of helium ga express the number in scientific notation.

Explanation:

Step1: Identify coefficient and exponent

To convert to scientific notation, we need a coefficient \(a\) where \(1 \leq a < 10\), and write the number as \(a \times 10^n\). For 26,800,000,000,000,000,000,000, move the decimal point 22 places left to get \(a = 2.68\).

Step2: Write final scientific notation

The number of places moved is the exponent \(n = 22\), so the number is \(2.68 \times 10^{22}\).

Answer:

\(2.68 \times 10^{22}\)