Question

Please do it fast and correct i will mark you as brainlist ​

Answer 1

Answer:

please mark me brainalist for further information

Explanation:

b) chemical equation should always be balanced because the law of conservation of mass states that matter can neither be created nor destroyed so in a chemical equation the total mass of reactants must be equal to the mass of products formed i.e. the total number of atoms of each element should be equal on both the ...

Answer 2

Answer:

1) because it is too strong to be used in the preparation of hydrogen gas

2) chemical equation should be balanced because we follow the law of conservation of mass during balancing a chemical equation

3) hilum gas is preferred over hydrogen to fill in balloons because hydrogen is very flammable and can be dangerous in laboratories

4) hydrogen is a neutral gas neither acidic or basic so it is do not react with litmus paper

5) sodium and potassium are very reactive metals and can be dangerous during the preparation of hydrogen so they are not used