Answer:
The answer to your question is T = 7.25 °K
Explanation:
Data
Temperature = ?
moles = 0.80
volume = 275 ml
pressure = 175 kPa
constant of ideal gases = 0.082 atm l/ mol °K
Process
1.- Use the ideal gas law to solve this problem
PV = nRT
-Solve for Temperature
T = PV / nR
2.- Convert Pressure to atm
1 atm --------------- 101.325 kPa
x --------------- 175 kPa
x = (175 x 1) / 101.325
x = 1.73 atm
3.- Convert volume to liters
1000 ml ---------------- 1 l
275 ml ----------------- x
x = (275 x 1) / 1000
x = 0.275 l
4.- Find the temperature
T = (0.275 x 1.73) / (0.8 x 0.082)
-Simplification
T = 0.476 / 0.0656
-Result
T = 7.25 °K
Answer:
0.2mol/kg
Explanation:
molality is the concentration of a solution in moles of solute per kilogram of solvent
moles of solute (NaOH) = 2moles
mass of solvent in kg. =10kg
Therefore molality. = 2moles/10 kg
=0.2mol/kg
Ans: Ce
Cerium is a chemical element with the symbol Ce and atomic number 58.
Answer:
B.condensation
Explanation:
water which collects as droplets on a cold surface when humid air is in contact with it.
Answer: single replacement
Explanation: metals higher than hydrogen in the activity series will always displaced or replace hydrogen in a solution. Pb is higher than hydrogen in the activity series, so it will displaces or replace hydrogen in a solution
