To go from molecules, we first need to convert to moles and then convert to grams.
To convert from molecules to moles, we need to divide by Avogadro's constant.
1.15*10^21 molecules * (1 mole/6.022*10^23 molecules) = 0.0019097 moles
To convert from moles to grams, we need to use the molar mass.
The molar mass of P₂O₅ is (2*30.98)+(5*16.00) = 141.96
You can find the molar mass using the periodic table.
0.0019097 moles * (141.96 grams/1 mole) = 0.2711 grams.
Since we have 3 significant digits in 1.15*10^21, that means our final answer is limited to 3 significant digits.
Your final answer is 0.271 grams.
Answer: The volume of the new solution is 83.33 mL.
Explanation:
Given:
= 200 mL,
= 0.5 M
= ?,
= 1.2 M
Formula used to calculate the volume of new solution is as follows.

Substitute the values into above formula as follows.

Thus, we can conclude that volume of the new solution is 83.33 mL.
C. one of the discoveries he made which gave him his fame in the scientific community was that the atom could not be destroyed
Explanation: Saponification reaction is a reaction in which hydrolysis of fats takes place under basic conditions giving glycerol and a salt of corresponding fatty acid.
We are given a Fatty acid called as Trimyristin.
Its reaction with KOH leads to the formation of soap and is given by the equation:


The condensed structural formula for the equation is given in the image attached.