Question

The water equivalent of a $400g$ copper calorimeter ($S_c=0.1cal/g-C$).

• A. $40g$
• B. $4000g$
• C. $200g$
• D. $4g$

Answer 1

The correct option is A $40g$

Specific heat of copper $S_c=0.1cal/g-C$

Water equivalent $m_W{S}_W=m_b{S}_b$

so $m_W=400\times 0.1g$

$m_W=40g$

so water equivalent is $40g$