Model the law of conservation of mass using equations
Practice Questions
Middle School Physical Science › Model the law of conservation of mass using equations
What reactant is missing from the beginning of the equation below?
____ + 24F2 --> 8SF6
In the following equation, what is the missing product?
Zn + 2HCl --> ZnCl2 + ______
The equation above shows a complete chemical reaction. How does this equation violate the law of conservation of mass?
According to the law of conservation of mass, if you start a chemical reaction with 50g of a substance, and 25g of another, you should end the reaction with: (assume this is a closed system)
The image above shows the reactants in a chemical equation. How many Oxygen atoms would you expect on the other side of this equation?
What coefficient is needed in the blank before "C2H6" to balance the chemical equation below?
______C2H6 + 7O2 ---> 4CO2 + 6H2O
You are boiling water on a stove. The water evaporates into the air. Is this an example of a closed or an open system?
Is the chemical equation above an example of a closed or open system?
A student puts 26.4 grams of baking soda in a balloon and ties it over the top of the bottle containing 50 grams of vinegar. After 40 minutes passes, there is only 60 grams of liquid and baking soda at the bottom of the bottle but the balloon is blown up. What is the best explanation for this?
In the chemical equation for Carbonic Acid, you begin with the reactants carbon dioxide and water. (CO2 + H2O) How many atoms of Oxygen would you expect to find in the symbol for carbonic acid?