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When 1.1.2g of iron reacts with 32g of bromine , iron (III)bromide is produced. Find the mass of iron (III) bromide.
5g of calcium carbonate was strongly heated to a constant mass calculate the mas of the solid residue formed Ca=40.0,O=16.0,C=12
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4. If you have had the chance to go out on a chilly day, you might have noticed that the balloon crumbles. However, if you take the balloon to a warm room, it regains its shape. Why does this happen?
2. What do you notice to your diaphragm (muscle that is located just below the lungs) as you inhale and exhale. What happens to the volume of the lungs if the diaphragm moves downward during inhalation and vice versa.
Construct an air pump balloon as a device to demonstrate the application of Boyle’s law.
Materials: 1.5L softdrink plastic bottle, electrical tape, cutter, 2 balloons, soldering iron or heated nail
1. Make a rectangular hole in the cap of the plastic bottle with the use of cutter.
2. Cut a part from one balloon with a size enough to cover the hole
3. Tape the clut part of the balloon to cover the hole of the plastic bottle cap. Do not tape one side of the cap.
4. Using heated nail or soldering iron, poke a hole in the center part of the bottle
. 5. Cover the bottle with its cap and put a balloon at the top of it.
6. Inflate the balloon by applying pressure in the plastic bottle through pumping.
Question: Relate the mechanics of the air pump balloon with the Boyle’s law. _______________________________________________________________________
5.A balloon has a volume of 2.25 L when the temperature is 400C. What will be the volume if the balloon is cooled to 120C? Assume the pressure to be constant.
4. A 2.5 litre sample of a gas is heated from 250 C to 550C at constant pressure. Compute the volume at the higher temperature?
3. At 250C, the volume of chlorine gas is 15 dm3 .What is the resulting volume if the temperature is adjusted to 320K provided that the pressure remains constant?
2. If 15.0 L Neon at 60 0C is heated at constant pressure, what temperature will it have if it occupies a volume of 4.50 L?
Given: V1= 15.0L V2 = 4.50 L T1 = 60 0C Convert 60 0C + 273 K = 333 K
1. A hot air balloon has a volume of 2800 m3 at 990C. What is the volume if the air cools to 800C.
Given: V1 = 2800m3 T1=99°C+273K = 372 K T2 =80°C +273K =353K
