_HSiCl3+_H2O->_H10Si10O15+_HCL

the answer is a. co2, this would be colder than the : )

explanation:

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.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)