How many oxygen atoms are shown in 3CaCO₃? | StemPy Lab

Help Contact For teachers and institutes

Mock Tests Classes Groups

StemPy Lab

Learn. Solve. Code the solutions. Test yourself.

Live examsFree mock exams, timed and rankedEveryone starts together, and your score and rank come the moment it ends.See the exams →

Learn

Physics
Chemistry
Mathematics
Biology
Python Programming
Statistics & Data Science
Classes
Groups

Practice

Problems
Quizzes
Mock Tests
Question Sets
Exams
Certificates
Python Labs
AI Practice Generator
Student-Created Tests

Community

Discussions
Resources
Notes
Blog

Account

Dashboard
My Content
Profile
Log in

© 2026 senLearn. All rights reserved.Help About Contact Privacy Policy Terms of Use Refund Policy

How many oxygen atoms are shown in 3CaCO₃? | StemPy Lab

Quizzes
How many oxygen atoms are shown in 3CaCO₃?

ChemistryEasyHigh School (9–10)GeneralChemical Reactions › Chemical Equations

Created by StemPy Lab

How many oxygen atoms are shown in $3\text{CaCO}_3$ ?

← All Quizzes

← An equation shows salt water as NaCl(aq). What does the symbol (aq) tell you?Nitrogen and hydrogen join to make ammonia: N₂ + H₂ → NH₃. When the equation is balanced, what is the coefficient of H₂? →

More onChemical Reactions › Chemical Equations

Discussion (0)

Log in to join the discussion.

Loading…

More questions on this topic

CH₄ + 2O₂ → CO₂ + 2H₂O. How many moles of oxygen are needed to burn 3 mol of methane?Medium
Potassium nitrate breaks up on heating: KNO₃ → KNO₂ + O₂. When it is balanced, what is the…Medium
A balloon holds 4 g of hydrogen and 16 g of oxygen. A spark sets off 2H₂ + O₂ → 2H₂O. Which gas…Hard
What does the 3 in 3H₂O mean?Easy
Hydrogen can also strip the oxygen from iron ore: Fe₂O₃ + H₂ → Fe + H₂O. Balance it, then add up…Hard

All questions on this topic →

Problems on this topic

24 g of methane burns completely: CH₄ + 2O₂ → CO₂ + 2H₂O.Hard
8 g of hydrogen burns in oxygen: 2H₂ + O₂ → 2H₂O.Medium
Zinc reacts with sulphuric acid: Zn + H₂SO₄ → ZnSO₄ + H₂.Medium
200 g of calcium carbonate is heated until it has all broken up: CaCO₃ → CaO + CO₂.Medium

All problems on this topic →