Ice Cube Melting Chemistry?
3 steps in the processing of heating 1) Heat the 5 g of ice from -5 to 0C formula E1= mc(tf-ti) = 5*2.11*(0-(-5)=52.75 J 2) melt the 5g of ice E=m*delta melting E2=5*334=1670 J 3) heat 5g of water from 0 to 15 E3= 4.18*5*(15-0)=313.5 j E(total)= 52.75+1670+313.5=2040 j So answer more correct is answer B
If an ice cube melts in water, why does the water level stay the same?
Essentially this works due to the ice pushing the water level up even when it is in solid form. Ice cubes left in water and allowed to float will be 93 percent or so submerged, which is equal to its density divided by the density of water. Since the cube is 93 percent submerged, it raises the level of water by 93 percent of its volume divided by the area. After the ice cubes melt, they turn into water, but the water they turn into is only 93 percent as voluminous because water is less dense than ice. Thus, the water added to the container due to the ice melting happens to be 93 percent of the full ice cube’s volume. Since this is the exact same amount of volume added when the ice cube is floating, the two water levels will naturally be the same.
Thermo chemistry, heating ice-water mixtures?
An electric heater (which provides a constant rate of heat output) heats a mixture of ice and water from 0°C to 5°C in one minute. Predict how will the temperature (T) change as a function of time (t), neglecting any heat loss to the environment? Graph a is a str8 line, linear... Graph B is a faster reaction start with a steady curve to the top left... Graph C is a slower reaction with a steady curve to the bottom right... and Graph D is a late reaction with a steep curve at the bottom right. a) The temperature increases linearly with time (A). b) The temperature changes faster in the beginning of the process (B). c) The temperature changes more slowly in the beginning (C). d) The temperature stays almost constant for a while before starting to rise (D). *Which one of the following statements best explains your prediction? a) It takes more energy to increase the temperature of a solid because the motion of its molecules is restricted. b) The cooling effect of the ice opposes the heating effect of the heater c) The process of turning ice into water is associated with increase in chemical energy of the system. d) It takes less energy to increase the temperature of a solid because it is distributed over less types of motion. e) Temperature change is proportional to the amount of energy entering the system. This is just a homework assignment but I have no dies how to do it... I know the thermo chemistry equations and what-not but I have no idea what to do here, please help.
If melting point is high does that mean substance melts faster or slower?
Diamond has the highest melting point. Potassium chloride has the next highest melting point. Ice has the lowest melting point. The higher the melting point, the slower it melts. I think Diamond is like 3000 degrees C, while ice is 0 degrees C
I need chemistry help pleeez!!!!!!!!!?
Good Grief!!! Charlie Brown. This looks like a boatload of homework. We're glad to help you with some sticky point of chemistry, but not to do your homework for you. For instance, if you really didn't understand the atomic theory of matter, then we would try to explain to your that copper (for instance) exists as tiny atoms which are in constant, random motion which is dependent on the temperature. As the temperature increases, the atoms vibrate faster, and take up a greater volume. The atoms don't get bigger, but the space they occupy gets larger, and the metal expands.