Question

me ayudan por favor, es para mañana​

Answer 1

3. %m/m = (m soluto/m solc.) x 100

  m solc. = m soluto + m solvente

a. calcular m solc.

m solc. = 60 g + 540 g

m solc. = 600 g

b. calcular  %m/m

% m/m = ( 60 g / 600 g) x 100

% m/m = 10 % g/g

4.  calcular g/L

g/L = masa soluto /L solc.

a. calcular el volumen en litros

V = 550 / 1000

V = 0.550 L

b. calcular g/L

g/L = 60 g / 0.550 L

g/L = 0.109

5. m sal = 20 g

V inicial = 495 mL / 1000 = 0.495 L

V final = 0.5 L

V total = 0.5 L - 0.495 L

V f = 0.005 L

a) calcular % m/v

a. calcular masa solución

V solc. = 20 g + 495 mL = 515 mL

b. calcular %m/v

%m/v = ( 20 g / 515 m) x 100

% m/v = 3.88 % g/mL

c . calcular g/L

g/L = 20 g / 0.5 L

g/L = 40

6. calcular % m/m

m H2SO4 = 200 g

m solvente = 2 Litros x 100 = 2000 mL

DH2O = 1 g/mL

m H2O = 1 g/mL x  2000 mL = 2000 g

a.  calcular m solc.

m Solc. = 200 g + 2000 g

m solc. = 2200 g

b. calcular % m/m

% m/g  = ( 200 g / 2200 g) x 100

% m/g = 9.09 % g/g