Ch.2 - Atoms & ElementsSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: How many  C2H4  molecules are contained in 45.8 mg of  C 2H4 ? The molar mass of  C2H4  is 28.05 g/mol. A) 2.71× 10 20 C2H4 molecules B) 9.83 × 10 20  C2H4  molecules C) 7.74 × 10 26  C2H4  molecules D) 4.69 × 10 23  C2H4 molecules E) 3.69 × 10 23  C2H4  molecules

Problem

How many  C2H molecules are contained in 45.8 mg of  C 2H? The molar mass of  C2H is 28.05 g/mol.

A) 2.71× 10 20 C2H4 molecules

B) 9.83 × 10 20  C2H molecules

C) 7.74 × 10 26  C2H molecules

D) 4.69 × 10 23  C2Hmolecules

E) 3.69 × 10 23  C2H molecules