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>
A the collisions between water particles and polllen grains
Answer:
2.44 %
Explanation:
Given that,
The calculated value of specific heat of water to be 4.29 J/g°C
The actual value of the specific heat of water is 4.18J/g°C
We need to find the percentage error of the student
Hence, the student's percent error is 2.44 %.
Answer:
first balance the reaction
n2 + 3h2 --> 2NH3
then you have your ratios
so for every mole of N2 you get 2 NH3
so 8.4mol is your answer
Explanation:
Some can, yes. It uses ATP I think