How many moles are in 825 atoms of carbon?

1.37 × 10⁻²¹ mol C

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Using Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:

Step 1: Define

825 atoms C

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

= 1.36998 × 10⁻²¹ mol C

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

1.36998 × 10⁻²¹ mol C ≈ 1.37 × 10⁻²¹ mol C

Bitter taste, high pH, and caustic

Explanation:

Acids are those substances which either donates hydrogen ions when dissolved in water. They have pH ranging from 1 to 6.9.They are They are sour in taste. They dissolve metals to give hydrogen gas.Strong acids are caustic as they burn skin.

Bases are those substances which either donates hydroxide ions when dissolved in water or donates a pair of electrons.  They have pH ranging from 7.1 to 14. They are bitter in taste. They are slippery in nature. Strong bases are caustic as they burn skin.