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I really need to do this by tomorrow. Chemistry help?
1, A sample of water is brought to a boil. The gas that leaves the system is
a. Molecules of hydrogen gas,
b. molecule of water vapor.
c. molecule of air.
d. molecule of oxygen gas,
2. A sample of water in a pan is brought to a boil. which of the following is true when boiling occurs?
a. the temperature of the boiling water gradually increases.
b. all of the liquid water immediately turns into gaseous water.
c. the temperature of the boiling water remains constant
d. the liquid water begins to break down into hydrogen and oxygen gas
3. when gaseous water is brought to a boil. the gas that leaves the system is
a. the water particles absorb energy from the surroundings
b. the water particles release energy to the surroundings
c. the water molecules get more disorganized
d. atoms of hydrogen and oxygen recombine to from H2O
3. when gaseous water condenses to liquid water
a. the water particles absorb energy from the surroundings
b. the water particles release energy to the surroundings
c. the water molecules get more disorganized
d. atoms of hydrogen and oxygen recombine to from H2O
2 Answers
- Dr WLv 77 years agoFavorite Answer
1 b
2 c
3... impossible....
... boiling is the phase change from liquid to gas
... gaseous water cannot be brought to a boil
********
3'.... b
- ?Lv 77 years ago
1 molecules of water vapor, H20
2. the temp of the boiling water remains constant until it all is boiled away.
3. Choice b, energy is released to the surrounds, assuming room temperature surroundings. and also choice C, the water molecules become more disorganized as they spread out into the surroundings. Entropy at work.
