Answer:
The molarity of ethanol is 5.8*10⁻³ M.
Explanation:
Molar concentration is a measure of the concentration of a solute in a solution, be it some molecular, ionic or atomic species.
Molarity or Molar Concentration is the number of moles of solute that are dissolved in a certain volume. It is calculated by dividing the moles of the solute by the volume of the solution:
Molarity is expressed in units .
Being the molar mass of ethanol 46 , then the number of moles that 40 grams of ethanol contain is calculated by:
So, being:
- number of moles of solute= 0.87 moles
- volume 150 L
Replacing in the definition of molarity:
Solving:
Molarity= 5.8*10⁻³ M
<u><em>The molarity of ethanol is 5.8*10⁻³ M.</em></u>
Aluminium metal will readily react with water at room temperature to form aluminium hydroxide and hydrogen
The easiest way to approximate ph level is through the ph paper measurement system because using pH paper would be best for doing a quick measurement in the field. It does not essentially need to be calibrated or standardized and the papers make available an instant estimate.
Kr, Ar, Ne, N
https://quizlet.com/60983723/science-unit-3-test-flash-cards/
Answer:
B 2
Explanation:
I checked it and it’s right hope this helps!!