Answer:
Force=mass ×acceleration.
20=10×acceleration.
20=10a.
a=2m/s^2.
Answer:
[Ar] 3d⁵ 4s¹ ..................
1km=100,000cm so 0.828km=82,800cm
i hope this helps:)
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Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances.