0.2625 litres is the volume of methanol should be used to make 1.25 L of a 21.0% by volume solution.
Explanation:
Given that:
Volume of solution = 1.25 litres
methanol to be present in the composition of 21% of the volume.
To make 21 % solution by volume of a substance it means that 21 L of the substance is present in 100 L of the solution which is made upto 100 L by adding the solvent.
So, 21 L in 100 L will make 21% solution
x litres of methanol in 1.25 L of solution
So,
= 
x = 0.2625 litres
hence, 0.2625 litres of the methanol will be added and the volume will be made to 1.25 litres so that 21% solution by volume gets form.
1. synthesis
<em>because</em><em> </em><em>it</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>only </em><em>option</em><em> </em><em>which</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>form</em><em> </em><em>of</em><em> </em><em>manufa</em><em>cturing</em><em> </em><em>complex</em><em> </em><em>materials</em>
Because they are both broke apart over time
Something created for using science for use by society. Hence, option A is correct.
<h3>What is science?</h3>
Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence.
Technology is the use of science to provide human problem. It can be in the form of a machine, tool or equipment. As long as it involves applying a scientific process, it's technology.
Example of technology is a computer. It's used to store and process data in a faster way. Old technology also included Hammer, Saw, Grinding Machines etc.
Hence, option A is correct.
Learn more about technology here:
brainly.com/question/9171028
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