Choose the correct equation to represent the following statement (unbalanced chemical equation):
aluminum reacts with hydrochloric acid to yield aluminum chloride and hydrogen.
a. alcl3 + h2 al + hcl
b. al + hcl alcl3 + h2
c. al hcl + alcl3 + h2
d. al + hcl alcl3 + h2o

Option (B) is the correct answer.

Explanation:

When aluminium reacts with hydrochloric acid then it results in the formation of aluminium chloride along with emission of hydrogen gas.

The chemical reaction equation for this reaction will be as follows.

It is a single displacement reaction as hydrogen of HCl is displaced by aluminium metal.

Thus, we can conclude that the correct equation to represent the following statement (unbalanced chemical equation) is

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.