Question 12 2 pts
How could a student determine whether an unknown chemical is an acid? (2 points)
Test the hydrogen ion concentration in the sample.
Measure the boiling point of the sample.
Weigh the sample before and after adding salt.
Determine whether the sample has surface tension,

no simpler subs form complex ones. synthesise = make

answer; equivalent to a one(1) horsepower motor;

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

there are no components of a physical goal mentioned on the list of choices that you've provided.