zadanie 1
mr = 100g
cp = 5%
ms = mr x cp/100%
ms = 100g x 5%/100% = 5g
34u 44,8dm³
CuCl₂ + H₂S --> CuS + 2HCl
5g x
z proprocji wyliczam x
x = 6,59dm³
zadanie 2
mr - 12g
cp = 50%
ms = 12g x 50%/100% = 6g
mr = ms x 100%/cp
mr = 6g x 100%/30% = 20g
zadanie 3
100g wody x
-------------- = -------
150g rozt. 300g
x = 200g wody
zadanie 4
1mol 18u
NaOH + HNO₃ --> NaNO₃ + H₂O
x 36g
x = 2 mole
V = 0,5dm³
cm = n/V
cm = 2mol/0,5dm³ = 4mol/dm³
zadanie 5
V₁ = 0,5dm³
cm₁ = 0,1mol/dm³
n = cm x V
n = 0,5dm³ x 0,1mol/dm³ = 0,05mol
V₂ = 0,3dm³
cm₂ = 0,05mol/0,3dm³ = 0,17mol/dm³
zadanie 6
cp = 10%
ms = 100g x 10%/100% - 10g
10g subs x
---------------- = -----
90g wody 100g wody
x = 11,1g
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)
" Life is not a problem to be solved but a reality to be experienced! "
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zadanie 1
mr = 100g
cp = 5%
ms = mr x cp/100%
ms = 100g x 5%/100% = 5g
34u 44,8dm³
CuCl₂ + H₂S --> CuS + 2HCl
5g x
z proprocji wyliczam x
x = 6,59dm³
zadanie 2
mr - 12g
cp = 50%
ms = 12g x 50%/100% = 6g
mr = ms x 100%/cp
mr = 6g x 100%/30% = 20g
zadanie 3
100g wody x
-------------- = -------
150g rozt. 300g
x = 200g wody
zadanie 4
1mol 18u
NaOH + HNO₃ --> NaNO₃ + H₂O
x 36g
z proprocji wyliczam x
x = 2 mole
V = 0,5dm³
cm = n/V
cm = 2mol/0,5dm³ = 4mol/dm³
zadanie 5
V₁ = 0,5dm³
cm₁ = 0,1mol/dm³
n = cm x V
n = 0,5dm³ x 0,1mol/dm³ = 0,05mol
V₂ = 0,3dm³
cm₂ = 0,05mol/0,3dm³ = 0,17mol/dm³
zadanie 6
cp = 10%
mr = 100g
ms = mr x cp/100%
ms = 100g x 10%/100% - 10g
10g subs x
---------------- = -----
90g wody 100g wody
x = 11,1g
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)