Answer:2
Explanation:
Because the oxidation number of magnesium is +2 and it s going to be exchanged with that of chlorine which is -1, so that chlorine carries the subscript of 2 and magnesium carries 1
The numbers inside the boxes represent the atomic number. the circles and dots represent the shells and electrons.
Answer:
Carbon Dioxide
Explanation:
Plants inhale Carbon Dioxide and exhale Oxygen
Answer:
8.4 m/s
Explanation:
Initial velocity of the object is 0 as it was at rest.
We need to find the object’s average velocity during the 3 second to 5 second.
We can see from the graph that from 3 s to 5 s, the graph is a straight line. If we take the slope we can find the average velocity during the 3 second to 5 second.
Displacement between 3 s to 5 s is :
D = 24.8 m - 8 m = 16.8 m
Time = 5 s - 3 s = 2 s
Now,
Average velocity,

So, the object’s average velocity during the 3 second to 5 second is 8.4 m/s.