Answer:
60 Miles per Hour
Explanation:
You included no scenario so I will develop a hypothetical that you can reference.
Assuming a car traveled a distance of 450 miles from one place to another in 9 hours with the car travelling 180 of those miles between 6 hours and 9 hours, what was the average speed between those 6 and 9 hours.
The car travelled 180 miles in 6hours - 9 hours. First find out how many hours this is:
= 9 - 6
= 3 hours
Speed = Distance / Time
= 180 / 3 hours
= 60 miles per hour
C. A new substance is produced. All others are physical changes.
Answer:
it would be a covalent bond
Explanation:
carbon has 4 valence electrons, while chlorine has 7.
Answer:
m = 31.284 grams
Explanation:
Given that,
The dimension of a magnesium block is 2.00 cm x 3.00 cm x 3.00 cm.
The density of magnesium is, d = 1.738 g/cm³
We need to find the mass of the magnesium block. We know that the density of an object is given by its mass per unit its volume. So,
So, the mass of the block is 31.284 grams.
