Iscotopes are usually stbolized in the following way:
X represents the chemical symbol
A rep Z represents the atomic number.
Answer: 0.25M
Explanation:
Molarity : It is defined as the number of moles of solute present in one liter of solution.
Given mass of = 73.5 g
Molar mass of = 98g/mol
Volume of solution = 3.0L
Answer is: solution B is saturated and solution A is unsaturated.
Saturated solution contains the maximum concentration of a solute dissolved in the solvent (usually water) and if extra solute is added to saturated solution, that solute will not dissolve.
Unsaturated solution means that more of a substance can be dissolved (in this example salt).
Volume of 100 drops: 0.43 dL
Explanation:
We can solve this question by applying the rule of three.
In fact, we know that:
- The volume of 1 drop of medicine is 0.43 mL, so the ratio between number of drops and volume (in mL) is 1 : 0.43
- Then we want to find the volume of 100 drops
So we can write the following equation:
where V is the volume of 100 drops.
Solving for V,
And keeping in mind that
1 dL = 100 mL
We can convert into deciliters:
Learn more about rule of three:
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