The volume of the unknown solution obtained from the given standard curve is 2.57%
The linear equation produced by the standard curve is :
- y = absorbance ;
- x = concentration in percent (v/v)
Unknown Solution with absorbance value of 0.35 ;
Input the value of y into the equation.
Collect like terms
Divide both sides by 0.136
Hence, percentage by volume of the unknown solution will be 2.57%
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Answer:
presence of cells
Explanation:
All living things are composed of cells. A cell can be defined as a complex biological arrangement that has all the structures and materials required for life. Cells carry out specialized functions such as, for example, metabolic functions to convert nutrients from food into energy (ATP), and reproduce by mitosis and/or meiosis. Thus, the cell is known to be the basic unit of life.
acid test
Explanation:
the first test the chemist should do is an acid test
A mixture of brown organic material (dead leaves, twigs, manure) and green organic material (lawn clippings, fruit rinds, etc.).
