The heat of fusion of a compound is 333.6 joules per gram. What is the total number of joules of heat that must be absorbed by a 15.0-gram sample to change the compound from solid to liquid at its melting point?
1304J
168J
420J
5004J
A solution containing 60 grams of NaNO3 completely dissolved in 50. grams of water at 50°C is classified as being
saturated
supersaturated
dilute and unsaturated
dilute and saturated
One hundred grams of water is saturated with NH4Cl at 50°C. According to Table G, if the temperature is lowered to 10°C, what is the total amount of NH4Cl that will precipitate?
5.0 g
17 g
30. g
50. g
how many grams of KNO3 would be needed to saturate 200 grams of water at 70°C?
43 g
86 g
134 g
268 g
2007-04-25 13:41:13 · 1 answers · asked by Celia 4 in Science & Mathematics ➔ Chemistry
5004J
supersaturated
Which Table G ???
2007-04-25 22:24:42 · answer #1 · answered by ag_iitkgp 7 · 0⤊ 0⤋