Answer:
Evaporation
Explanation:
Though it doesn't require high temperatures to do so
Answer:
7.5 sec.
Explanation:
A = A₀e⁻^kt => k = ln(A/A₀)/-t => ln(6.25/100)/-30s = 0.0924 s⁻¹
k·t₀.₅=0.693 => t₀.₅=0.693/k = (0.693/0.0924)s = 7.5 s
Answer:
Molality is the measurement of how much concentration is present in a solution by dividing the moles of solute by the kilograms of the solution that the solute was dissolved in.
Explanation:
<span>Hello!
We have the following data:
W (molality) = ? (in Molal)
m1 (mass of the solute) = 14.7 g
m2 (mass of the solvent) =? (in Kg)
d (</span><span>solvent density) = 1,00 g/mL
</span>V (volume of the solvent) = 150 mL
<span>The mass of the solvent will be found by the following formula
</span>
<span>
</span>
<span>
M1 (Molar mass of solute - </span>C6H12O6) = ?
C = 6*12 = 72 u
H = 12*81 = 12 u
O = 6*16 = 96 u
------------------------
M1 (Molar mass of solute - C6H12O6) = 72+12+96 = 180 g/mol
<span>Now, let's find Molality, applying the above data to the formula, let's see:
</span>
I hope this helps. =)