A lab technician gets a mystery liquid. By experimenting he found the liquid contained 2.688 grams of Hydrogen and 21.32 grams of Oxygen What was the total mass of the liquid? In grams

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.

c. 4.54 x 10–12 j happens to be correct