Science is an organized body of knowledge that consists of testable explanations and predictions about the universe including everything around us.
It is developed via experimentation using enquiry. The facts in science depends upon the result of the experimentation which is retested to verify it. But in case of new discoveries in future, it can also modify it.
Thus, the statement which is not true about the science is :
1. It reflects the personal opinions and beliefs of scientists.
Answer : The correct option is a car's velocity changes from 25 m/s to 20 m/s in 5 seconds.
Explanation :
Acceleration : It is defined as the change in velocity divided by the time.
The formula of Acceleration is,
So, we can calculate the acceleration only for 2nd option which is a car's velocity changes from 25 m/s to 20 m/s in 5 seconds.
In this option, velocities and time are given.
In all the other options, the velocity and time are not given. So, we can not calculate the acceleration.
Hence, the correct option is a car's velocity changes from 25 m/s to 20 m/s in 5 seconds.
The number of O atoms that ate in 1.25 mol of SO2 is 2.5 moles
<em><u>calculation</u></em>
moles of O= total number O atoms in SO2 x 1.25 moles
The number of O atoms in SO2 = 1 x2 = 2 atoms
moles is therefore= 2 x 1.25 moles = 2.5 moles