Page Break What is the total amount of heat in Joules (1) that must be added to 250g of ice (solid H20) at -10°C to
change it into water at 40°C? (1. Cice= 2.011/6°C, 2. AHus= +6.01kJ/mol, 3. Swater = 4.181/5°C)
100'
(3)
Temp
(°C)
LIQUID
q#McAT
(2)
MELTING
(AHM)
ICE
qemCAT
So'c
Time

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.