# How do I calculate the percent error for Latent Heat of Fusion Experiment?

Anonymous

Question description

The Equation Given was :

m_w C_w(T_h - T_F) + m_c C_c(T_h - T_F) = m_i C_i(0 - T_i) + (m_i* L_f) +m_i C_w(T_F-0)

To find Latent Heat of Fusion it is modified to
L_f = ( m_w C_w(T_h - T_F) + m_c C_c(T_h - T_F) - m_i C_i(0 - T_i) - m_i C_w(T_F-0) )/ m_i

Masses

mass of water (m_w) is 215.1 g +/- 0.1g
mass of Aluminum calorimeter (m_c) is 70.3g +/- 0.1g
mass of ice (m_i) is 8.9g +/- 0.1 g

Specific Heats or C's

C_c Aluminum 0.215 cal/(g*C)
C_w water 1.00 cal/(g*C)
C_i ice 0.5000 cal/(g*C)

Temps

T_H temp of hot water 48.1 +/- 0.1 C
T_I temp of Ice 0.1 +/- 0.1 C
T_f Final temp 43.2 +/- 0.1 C

m_wc_w(T_h-T_F) = 215.1g(1)(48.1-43.2)= 1053.99
m_cC_c(T-h-T_F) = 70.3g(0.215)(48.1-43.2)= 74.06
m_iC_i(0-Ti) = 8.9G(0.500)(0-0.0) = 0
m_i C_w(T_f-0)= 8.9g(1)(43.2)= 384.48

L_F = all sums added up or subtracted depending on the terms. divided by the mass of ice

L_f = 7346.57/8.9 = 83.547

so using all of this how do I calculate the percent error for the Latent Heat of fusion and for each of
parts shown above like 384.48 =+/- ???.

For L_f  I got 83.547 +/- 6.36 cal/g

percent uncertainty or error?

m_wC_w  or p1  .041

m_cC_C  p2    .041

m_iC_i  p4   0.0013

m_iC_w    p3   .012

However im not sure these are right so I need help figuring out how to correctly do this or for someone to check if it is right?

(Top Tutor) Studypool Tutor
School: University of Virginia
Studypool has helped 1,244,100 students
flag Report DMCA

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors