2. Atoms & Elements
Law of Conservation of Mass
2. Atoms & Elements
Law of Conservation of Mass - Video Tutorials & Practice Problems
![](/channels/images/questionAssist/aiBot.png)
Get help from an AI Tutor
Ask a question to get started.
"In a chemical reaction, no matter is created or destroyed, but instead changes form."
Lavoisier's Conservation of Mass
1
concept
Law of Conservation of Mass
Video duration:
1mPlay a video:
According to Lavoisier, all reactants are completely converted into products.
2
example
Law of Conservation of Mass Example 1
Video duration:
1mPlay a video:
3
Problem
ProblemFollowing the Law of Conservation of Mass, predict the minimum amount of nitrogen that will react with 50.0 grams of hydrogen to produce 92.5 grams of ammonia.
Nitrogen + Hydrogen → Ammonia
A
42.5 g
B
45.91 g
C
46.25 g
D
50.0 g
4
Problem
ProblemPredict the amount of oxygen gas that will remain after the reaction of 112.6 grams of calcium with 24.0 grams of oxygen.
A
8.5 g
B
11.0 g
C
18.0 g
D
24.0 g
Do you want more practice?
We have more practice problems on Law of Conservation of Mass
Your General Chemistry tutor
Additional resources for Law of Conservation of Mass
PRACTICE PROBLEMS AND ACTIVITIES (18)
- Write 'true' or 'false' for each statement. (b) If the reaction 2 O3(g)S 3 O2(g) goes to completion and all O...
- An automobile gasoline tank holds 21 kg of gasoline. When the gasoline burns, 84 kg of oxygen is consumed, and...
- Assume that the mixture of substances in drawing (a) undergoes a reaction. Which of the drawings (b)–(d) rep-r...
- A sample of nitrosyl bromide (NOBr) decomposes according to the equation 2 NOBr1g2 Δ 2 NO1g2 + Br21g2 An equil...
- A sample of mercury with a mass of 114.0 g was combined with 12.8 g of oxygen gas, and the resulting reaction ...
- A sample of CaCO3 was heated, causing it to form CaO and CO2 gas. Solid CaO remained behind, while the CO2 esc...
- One of the steps in the commercial process for converting ammonia to nitric acid is the conversion of NH3 to N...
- If the mass of the products measured 120 g, what would be the mass of the reactants?
- Which best represents the law of conservation of mass?a. mass of reactants > mass of products b. mass of re...
- Why does the mass of a substance remain the same after a chemical reaction?
- The law of conservation of matter states that during a chemical reaction, the amount of matter
- What is the law of conservation of matter, and how does it apply to chemical reactions?
- How can the law of conservation of mass apply to a burning log, if all that remains of it is ash?
- Which of the following is true about the mass of the reactants in a chemical reaction?
- The law of conservation of mass is best described as which of the following statements?
- What is the law of conservation of matter, and how does it apply to chemical reactions?
- Which chemical equation shows that the total mass during a chemical reaction stays the same?
- What does the principle of conservation of matter say? How is this related to Earth's plates?