Calculate the number of molecules in 3.7 x 10-2 Liters of oxygen gas at STP. Round your answer to the nearest whole number.

9.9 × 10²⁰ molecules O₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

3.7 × 10⁻² L O₂ at STP

Step 2: Identify Conversions

[STP] 22.4 L/mol

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

9.94705 × 10²⁰ molecules O₂ ≈ 9.9 × 10²⁰ molecules O₂

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

there are two significant figures.