Qualification > Sciences
Chemistry Help needed!:-(
astarmathsandphysics:
Fill a large basin full of water. Invert another basin and completely submerge it in the first one so that it is full of water with no air bubbles. Now put the can of coke unside the upturned submerged 2nd basin and open it. The volume of gas releaSED is the answer. This can be found by using a calibrated beaker as the upturned 2nd container.
hyebyekadal:
astar i didnt get what u mean..
sorry and i looked up the ms and its undecipherable!
can open under water to collect gas in graduated tube / m. cylinder (1)
filled with water (1), syringe = 0 (would not work) [2]
godfather93:
fill a beaker or a measuring cylinder with water to the brim. place it in another bowl full of water but turn it upside down inside the water without letting the air bubbles get in. submerge the can under the water and place it under the beaker/measuring cylinder (make sure no air bubbles get in and the beaker covers the top portion of the can only). open the can and when the gas bubbles are released, it is trapped by the measuring cylinder and gas replaces the water inside the measuring cylinder. take the reading of the empty space inside the measuring cylinder. that is the volume of the gas released.
Naruto:
@astar & godfather
thanx guyz for your help that question really confused me especially the mark scheme.....
and if im not wrong i think this method is called the downward displacement of water...right?
godfather93:
yes, good luck! ;)
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