Answer:
Molality = 1.13 m
Explanation:
Molality is defined as the moles of the solute present in 1 kilogram of the solvent.
Given that:
Mass of 
= 26.5 g
Molar mass of = 32.04 g/mol
The formula for the calculation of moles is shown below:
Thus,
Mass of water = 735 g = 0.735 kg ( 1 g = 0.001 kg )
So, molality is:
<u>Molality = 1.13 m</u>
Answer:
5 degrees required for ice
A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. The neutralization of a strong acid and strong base has a pH equal to 7.
<span>1.49 x 10^22 atoms
First determine the molar mass of P2O5
Atomic mass of Phosphorus = 30.973762
Atomic mass of Oxygen = 15.999
Molar mass of P2O5 = 2 * 30.973762 + 5 * 15.999 = 141.9425
Now determine how many moles of P2O5 you have
0.500 / 141.9425 = 0.003523
Since there's a total of 7 atoms per molecule of P2O5, multiply the number of moles by 7 to get the number of moles of atoms you have.
7 * 0.003523 = 0.024661
Finally, multiply by avogadro's number (6.0221409 x 10^23) to get the total number of atoms.
0.024661 * 6.0221409 x 10^23 = 1.48512 x 10^22</span>
