Calculate the heat gained by 100 grams of ice at -20°c in order to become water at 50°c. ( c = .5 for ice and c = 1 for water, q = m. с.δt)

cal

Explanation:

= mass of ice = 100 g = 0.1 kg

 = specific heat of ice = 0.5 cal/(kg°C)

 = specific heat of water = 1 cal/(kg°C)

 = Latent heat of fusion of ice = 80 J/g

 = initial temperature of ice = - 20 °C

 = final temperature of ice = 50 °C

Q = Heat gained

Heat gained is given as

cal

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.