michaelar2819 michaelar2819
  • 13-05-2020
  • Chemistry
contestada

How much ice at 0°C could be melted by the addition of 15 kJ of heat? (ΔHfus = 6.01 kJ/mol)


a. 0.4 g

b. 2.5 g

c. 7.2 g

d. 45 g

Respuesta :

faithidahosa416
faithidahosa416 faithidahosa416
  • 19-05-2020

Answer: d.45 g

Explanation:see attached photo

Ver imagen faithidahosa416
Answer Link
xero099
xero099 xero099
  • 19-05-2020

Answer:

d. 45 g

Explanation:

The amount of ice melted is:

[tex]\Delta n = \frac{15\,kJ}{6.01\,\frac{kJ}{mol} }[/tex]

[tex]\Delta n = 2.496\,moles[/tex]

[tex]\Delta m = \Delta n \cdot M_w[/tex]

[tex]\Delta m = (2.496\,moles)\cdot \left(18\,\frac{g}{mol} \right)[/tex]

[tex]\Delta m = 44.928\,g[/tex]

Answer Link

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