Answer:
3.37 m
Explanation:
<u>Number of moles of solute present in 1 kg of solvent is termed as molality</u>
It is represented by 'm'.
Thus,
![Molality\ (m)=\frac {Moles\ of\ the\ solute}{Mass\ of\ the\ solvent\ (kg)}](https://tex.z-dn.net/?f=Molality%5C%20%28m%29%3D%5Cfrac%20%7BMoles%5C%20of%5C%20the%5C%20solute%7D%7BMass%5C%20of%5C%20the%5C%20solvent%5C%20%28kg%29%7D)
Given that:
The mass of LiCl = 15.0 g
Molar mass of LiCl = 42.394 g/mol
The formula for the calculation of moles is shown below:
Thus,
Mass of the solvent = 105 g
Also, 1 g = 0.001 g
So,
Mass of water (solvent) = 0.105 kg
Molality is:
![Molality\ (m)=\frac {0.3538}{0.105}\ m](https://tex.z-dn.net/?f=Molality%5C%20%28m%29%3D%5Cfrac%20%7B0.3538%7D%7B0.105%7D%5C%20m)
<u>Molality = 3.37 m</u>
Answer:
V = 267.2 L
Explanation:
Given data:
Volume of balloon = ?
Mass of helium = 2.50 g
Temperature of gas = 180°C
Pressure = 0.87 atm
Solution:
Number of moles of helium:
Number of moles = mass/molar mass
Number of moles = 2.50 g/ 4 g/mol
Number of moles = 0.625 g
Volume of helium:
PV = nRT
R = general gas constant = 0.0821 atm.L/mol.K
0.87 atm× V = 0.625 mol × 0.0821 atm.L/mol.K×453 K
V = 232.45 atm.L /0.87 atm
V = 267.2 L
So..... I believe this is a Convergent boundary and mountains..
3 C6H12O6,
C=3*6=18 Carbon atoms
H=3*12=36 Hydrogen atoms
O=6*3=18 Oxygen atoms
Answer:
50?
I think but not 100% sure if not lmk