conservation of mass

Tick the correct statement below. [1]

In a chemical reaction...

by burning 11,2 gram iron we can get 14,4 g iron(II) oxide.

Find how much oxygen is required for the reaction. The mass of iron

and oxygen together should be equal to the mass of iron oxide after

reaction

The conservation of mass rule can be applied to other reactions also.

By keeping this in mind, solve the question below.

We can get table salt by combining sodium and chlorine. Find the mass of

chlorine gas used if the mass of sodium used is 4,6 gram and the mass

of salt produced is 11,7 gram. Here the mass of sodium and chlorine is

equal to the mass of the table salt at the end.

Sometimes the total mass of the substance on the dish seems to get

less. Actually, some mass is released as a gas. Please solve the

example below by considering it.

Calcium carbonate can produce calcium oxide and carbon dioxide.

Initial mass of calcium carbonate is 10 gram and the mass of the

calcium oxide is 5,6 gram. Find the mass of carbon dioxide released

into the atmosphere.

Write a word equation for the reaction, which takes place when

the magnesium burns in oxygen.

when carbon and oxygen reacts, two oxygen atom combine with 1 carbon atom. if there are 4 carbon and 8 oxygen atoms at the beginning of the reaction, how many carbon dioxide molecules will be formed at the end.

the reaction between carbon and oxygen is as follows:

carbon+ oxygen==> carbon dioxide

write which one is the product here

12 g of carbon reacted with 32 g of oxygen. What mass of carbon dioxide was formed? Circle the correct

answer.

In an experiment, a student burnt magnesium ribbon in air. He

found that the mass of the powder formed was greater than the

original mass of the ribbon.

This diagram below shows the reaction between marble chips and acid

This is the word equation for the reaction:

hydrochloric acid+ calcium carbonate —> calcium chloride+ carbon dioxide +water

the initial mass of the reactants measured as 180 gram. what woud you expect the total mass of the calcium chloride and water.

If you heat a piece of copper, it combines with oxygen from the air to form a black layer of copper oxide. Write a word equation for this reaction.

how will the mass of the copper will change when it combines with oxygen and forms copper oxide

5 grams of iron combines with 3 grams of sulfur and forms iron sulfide. calculate the mass of the iron sulfide that is formed.

8 grams of aluminium combines with oxygen in the air and forms 11 grams of aluminium oxide. how much oxygen combined with aluminium.

in which of the reactions below the mass increases?

in which of the reactions below the mass decreases?