Leaving a basketball out in the cold weather. When a basketball if left in a cold garage or outside during the cold months, it loses its air inside (or volume).
Answer:
1.65hr
Explanation:
Given parameters:
Number of labs = 5 labs
Time taken = 3 minutes
Unknown:
Time taken in hours to grade 165 labs = ?
Solution:
Let us find the rate of the teacher;
Rate =
Insert the parameters and solve;
Rate =
= 1.67labs/min
Now;
Time to grade 165 labs =
Time to grade 165 labs =
= 98.8min
Since;
60min = 1hr
98.8min =
= 1.65hr
Answer: 1
Explanation: Lithium has a single electron in the second principal energy level, and so we say that lithium has one valence electron.