the nucleus of an atom is held together by the strong force, while the electrons are held in the atom by the electric force.
Osmotic pressure is mathematically expressed as
π = CRT
where, C = concentration of solution
R = gas constant = 0.082 atm mol-1 K-1
T = temperature = 300 K
π = osmotic pressure = 0.55 atm
∴ 0.55 = C X 8.314 X 300
∴C = 0.022 M
Now, conc of solution (in terms of molarity) =
Given: weight of solute = 0.9 g
volume of solution = 100 ml = 0.1 l
∴ 0.022 =
∴ Molecular weight = 4.09 g/mol
Answer:
39,5 grams should be obtained of NaCl
Explanation:
We calculate the weight of 1 mol of NaCl:
Weight 1 mol NaCl= Weight Na + Weight Cl= 23g + 35,5g=58,5 g/mol
4,5M--> 4,5 moles NaCl in 1000ml (1L) of solution
1000ml-----4,5 moles NaCl
150 ml------x=(150 mlx4,5 moles NaCl)/1000ml=0,675 moles NaCl
1 mol NaCl--------------58,5 grams
0,675molesNaCl---x= (0,675molesNaClx58,5 grams)/1 mol NaCl
x= 39,4879 grams
Answer:
i gussss D is the answer may be
Answer:
the volume of the gas doubles whatever it is
Explanation: