Calculate the heat energy required to vaporize 50g of wat...
Calculate the heat energy required to vaporize 50g of water initially at 80ºC if the specific heat capacity of water is 4.23jg\(^{-1}\)k\(^{-1}\) (specific latent heat of vaporization of water is 2260jg\(^{-1}\)
530000J
23200J
17200J
130000J
Correct answer is D
H = mc\(\bigtriangleup\theta\) + mL
H = ?
m = 50g, c = 4.23J/gk,L = 2260, \(\bigtriangleup\theta\) = 80ºC
H = 50 [4.23 x 80 + 2260]
= 129920 \(\approx\) 130,000J
Which of the following statements is not true of the isotopes of an element? They ...
Gamma rays are produced when? ...
Which of the following statements about waves in pipes is correct? ...
Using the data in the circuit illustrated above, calculate the value of R ...
Which of the following devices convert heat energy to electrical energy? ...
The resultant force in a couple is ...
A lens that is thinner at the middle and thicher at the edges is ...