The answer is C. 2, 1, 2, 1
This way both sides of the reaction have the same amount of atoms of each element:
Na = 2 atoms
Cl = 2 atoms
Ca = 1 atom
F = 2 atoms
following the law of conservation of mass which says the mass remains constant, it can't be added or removed
Explanation:
well its depends for example one car might be going down the hilll and the other up a hill and there the velocity can change between the cars because of gravity so one can be going faster and the other slower.
Answer:
B. 1 m/s
Explanation:
Metric unit conversions:
0.3 km = 300m
5 minutes = 5*60 = 300 seconds
So if a seal can reach a depth of 300m in a time of 300 seconds, its diving speed is the distance divided by time duration
v = s/t = 300/300 = 1m/s
So B is the correct answer
The bulb might blow out due to too much electricity. it can only take s much you know.