Molecular Formula quiz

More questions about Molecular Formula

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   What molecular formula represents the primary sugar found in human blood?

   Answer: C₆H₁₂O₆

   Why: Your entire bloodstream carries only about 4 grams of glucose at any moment, roughly one teaspoon.

2. 2 Medium

   Which formula represents the toxic gas produced by incomplete combustion?

   Answer: CO

   Why: Colorless and odorless, it latches onto blood's oxygen carrier hundreds of times more tightly than oxygen, so homes fit detectors.

3. 3 Hard

   What did August Kekulé dream of to discover benzene's hexagonal molecular structure?

   Answer: A snake eating its tail

   Why: Kekulé first told this story in 1890, a quarter century after his benzene paper, and historians still argue whether it ever happened.

4. 4 Easy

   What is the main component of natural gas?

   Answer: Methane

   Why: Natural gas is roughly 70 to 90 percent methane; ethane, the next biggest ingredient, rarely tops 10 percent.

5. 5 Medium

   How many atoms are in one molecule of sulfuric acid, H₂SO₄?

   Answer: Seven

   Why: Those same seven atoms build Venus's clouds: the planet is wrapped in droplets of sulfuric acid rather than water.

6. 6 Hard

   Which formula represents the simplest alkene used to ripen fruit?

   Answer: C₂H₄

   Why: Leaking city lighting gas defoliated street trees in the 1860s; in 1901 Neljubow showed its active ingredient was ethylene.