Answer:
59.2 grams
Explanation:
We are given that 70.4% of the weight of the total 200 g of the concentration is made up of nitric acid, the remaining information is not required to solve the problem. Since water and nitric acid are the only components of the solution, the total weight of water is given by:
There are 59.2 grams of water in this solution.
The valence electrons of an element is usually determined by its atomic number. The valence elctrons are the electrons that have the highest energy level.
Fluorine has 7 valence electrons in the ground state.
Answer:
B.) cement
Explanation:
The commonest types of impression evidence found in crime scenes include footprints, tire tracks, bite marks and tool marks etc.These types of impression evidence can be used by crime scene investigators to link the suspects to the crime.
The impressions are usually cast using gypsum cement and other forms of casting tools to preserve the evidence and make it useful during any period in the course of the investigation.
True. because a theory has facts.
