Answer:
The answer to your question is molality = 0.22
Explanation:
Data
molality = ?
mass of glucose = 100 g
molar mass of glucose = 180 g
mass of water = 2.5 kg
Process
1.- Calculate the moles of glucose using proportions
180 g ------------------ 1 mol
100 g ------------------ x
x = (100 x 1) / 180
x = 100 / 180
x = 0.56 moles
2.- Calculate the molality
Formula
molality = moles / mass of solvent
- Substitution
molality = 0.56 / 2.5
- Simplification
molality = 0.22
Answer:
http://www.khalidshadid.com/uploads/3/9/2/0/3920808/raymond_chang-chemistry_10th_edition.pdf
Explanation:
http://www.khalidshadid.com/uploads/3/9/2/0/3920808/raymond_chang-chemistry_10th_edition.pdf
If the change in entropy of the surroundings for a process at 451 k and constant pressure is -326 j/k, then heat flow absorbed (in kj) by the system is -147.026kJ.
<h3>What is entropy? </h3>
The entropy of particle is defined as how random it move. It shows the randomness of the system or may be disorders of the system. It is used to measure the unavailable energy for performing useful work.
Unit of entropy = J/K
<h3>Formula:</h3>
∆s = ∆Q/T
where,
∆s = change in entropy of the surrounding = -326J/K
∆Q = heat absorbed from surrounding
T = Temperature = 451K
∆Q = ∆s × T
∆Q = -326 × 451
∆Q = 147,026 J
∆Q = 147.026 kJ
Thus we find that the heat absorbed by the system is 147.026 kJ.
learn more about entropy:
brainly.com/question/14131507
#SPJ1
D. photons it contains light but with zero mass
Answer:
First of all, it's KNO₃ not KNO.
Second, KNO₃ is neither an acid nor it is a base, infact, it is a salt and therefore it's neutral.
hope that helps...
