Why do chemical equations need to be balanced? Group of answer choices
to ensure that the reactants have more atoms than the products
Because otherwise the reaction won't work
because matter, such as atoms, cannot be created or destroyed
The reaction is unstable otherwise

58 km per hour : d

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

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.