Answer:
I think 2.6 sorry if its wrong
Mass number = protons + neutrons
mass number = 5 + 7
mass number = 12
Answer:
Start and end times; distance run.
Step-by-step explanation:
Average speed = distance/time.
Kaila should record the distance run, the time she started, and the time she ended her run.
The difference between the start and end times gives the time for the run.
If she inserts her numbers into the formula, she will get her average running speed.
Answer:
400 miles because it is going 50 mph
Equation: 2K + S --> K2S
Chemical formula: K2S
