Answer:
25 gm would be left
Explanation:
45 hours is 3 half lives
200 gm * 1/2 * 1/2 * 1/2 = 25 gm
Answer:
Since the chemical composition of the substance stays the same, such as that of water in the above mentioned example, melting and boiling are physical changes. And hence, boiling points and melting points are physical properties. Since they are a property of the material, they can be used to identify it.
Explanation:
Answer:
B. Viewers can see the setting and props.
Explanation:
The other answers look to be disadvantages that could hinder the story making B stand out as the only advantage listed. Allowing the viewer to see and hear the story from a film or play is also more stimulating, compared to just reading or being read aloud the story, which can better focus the viewer on the story.
Molecules comes first since they are the smallest. Then atoms. Then blood cells. Then the heart I think, and then the person.
Answer:
10
Explanation:
The unbalanced combustion reaction is shown below as:-
On the left hand side,
There are 3 hydrogen atoms and 1 nitrogen atom and 2 oxygen atoms
On the right hand side,
There are 1 nitrogen atom and 2 hydrogen atoms and 2 oxygen atoms
Thus,
Right side, 
must be multiplied by 6 to balance hydrogen.
Left side, 
must be multiplied by 4 to balance hydrogen.
Also, Right side, 
is multiplied by 4 so to balance nitrogen.
Left side, 
must be multiplied by 5 to balance the whole reaction.
Thus, the balanced reaction is:-
Sum of Coefficient of product - 4 + 6 = 10
