Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the accelerated-mobile-pages domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/erudites/web/erudites.ng/public_html/wp-includes/functions.php on line 6121
0.5kg Of Water At 10ºC Is Completely Converted To Ice At 0ºC By Extracting (88000) Of Heat From It. If The Specific Heat Capacity Of Water Is 4200jkg¹ Cº. Calculate The Specific Latent Heat Of The Fusion Of Ice. - Erudites Academy

0.5kg of water at 10ºC is completely converted to ice at 0ºC by extracting (88000) of heat from it. If the specific heat capacity of water is 4200jkg¹ Cº. Calculate the specific latent heat of the fusion of ice.

by | Mar 26 | Physics JAMB | 0 comments

A. 9.0kjkg−1
B. 84.0kjkg−1
C. 134.0kjkg−1
D. 168.0kjkg−1

Correct Answer:

Option C = 134.0kjkg−1

Explanation

Heat involved (H) = 88,000J, Mass(M)= 0.5kg, specific heat capacity of water(C) = 4200JkgºC,

Specific latent heat of fusion(L) = ?, Temperature change(Δθ) = θ2 – θ1 = (10 – 0)° = 10°

H = MCΔθ + ML

or

H = M(CΔθ + L) –>H/M = CΔθ + L

: L = H/M – CΔθ = 88,000/0.5 – 4200 × 10

L = 176,000 – 42000 = 134,000

L = 134,000 or 134kj/kg

 

Users Also Read These:

Copyright warnings! Do not copy.