Answer:
No, the reaction was not carried out in a closed system
Explanation:
Recall that a closed system is one in which there is no exchange of materials nor energy. Hence there is no movement of matter in or out of the system. The total mass and energy present in the system is constant.
On the reactant side we have that the total mass of baking soda and vinegar is 47g + 13 g = 60g.
However on the product side, we have only a total of 56g which implies that a mass of 4g was lost in the reaction. This loss of mass can not happen in a closed system.
Hence the system is not a closed system because some mass was lost.
Answer: Persistence of vision.
Explanation:
Persistence of vision is a form of sight-related illusion that is created in mind due to uniting of various separated images into one.It gives the illusion of movement to the vision.This phenomena occurs for short duration of time .
This concept is used in multimedia ,animation movies and other motion visual fields for providing perception of motion through visuals images.
Answer: Event Recording
Explanation:Event recording can be defined as a process by which an observer documents the number of times a behavior occurs. A tally/document is used by the observer using event recording for recording each time a student/individual involved in a target behavior. It should also be noted that the duration in which the behavior is being observed is recorded by the observer .
C, A, A, C, hope this helps
Answer:
Explanation:
Line of sight is the visible path between your vehicle and the target area.
Line of sight problems include
- Bushes
- Parked cars
- fences
- Trees
While Path of travel includes
- Snow
- Ice
- Construction, etc.
