10 points
1 answer:
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Answer:
The acceleration of the car is -5m/s²
Explanation:
Given parameters:
Initial velocity = 75m/s
Final velocity = 0m/s
Time = 15s
Unknown:
Acceleration of the car = ?
Solution:
Acceleration is the rate of change of velocity with time;
Mathematically;
Acceleration =
Insert parameters and solve,
Acceleration = = -5m/s²
The acceleration of the car is -5m/s²
<u>Answer:</u> The percent composition of fluorene is 33.08 % and benzoic acid is 36.03 %.
<u>Explanation:</u>
We are given:
Mass of mixture = 544 mg
Mass of fluorene after purification =
Mass of benzoic acid after purification = 196 mg
To calculate the percentage composition of a substance in a mixture, we use the equation:
<u>For fluorene:</u>
Hence, the percent composition of fluorene is 33.08 %
<u>For benzoic acid:</u>
Hence, the percent composition of benzoic acid is 36.03 %