Explanation:
example is copper iron...........
An element's atomic number is 45. how many electrons would an atom of this element have?
1 answer:
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Explanation:
Relation between molarity and molar mass is as follows.
Molarity =
It is given that mass is 1 mg/ml which is also equal to g.
Molecular mass = 58 Da = 58 g/mol
Volume = 1 ml
Therefore, calculate molarity as follows.
Molarity =
=
= 0.0172 molar
It is known that 1 molar equals 1000 millimolar.
So, 0.0172 molar =
= 17.2 millimolar
Thus, we can conclude that the concentration of given solution is 17.2 millimolar.
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Looking at the information given in the description, the experiment is testing for the effects of the different salts on the growth of the plants.
This means that the type of salt is the independent variable, or the variable being manipulated and tested.
To ensure fair results, some parts of the experiment would need to be kept the same, which is the control. The only answer choice that makes sense in this instance is A. water.