BSC 1010C Ch.3 Exam Questions Correctly Answered.
Each water molecule is joined to _____ other water molecules by ____ bonds.
1. four ... hydrogen
2. two ... hydrogen
3. two ... polar covalent
4. three ... ionic
5. four ... polar covalent - CORRECT ANSWER 1. four ... hydrogen
The une...
1. The insect is flying just above the water surface.
2. The insect is very light.
3. It is difficult to change the temperature of water.
4. The insect is swimming.
5. Surface tension.
If the molecular mass of a carbon atom is 12, the mass of a hydrogen atom is 1, and the mass of an
oxygen atom is 16 daltons, how many molecules does one mole of table sugar (sucrose; C12H22O11)
contain?
1) 6.02 x 10^23/342
2) 45
3) 6.02 x 10^23
4) (6.02 x 10^23)(342)
5) 342 - CORRECT ANSWER 3) 6.02 x 10^23
Because organisms are made primarily of water, they resist rapid temperature changes. This useful
quality is based on water's _____.
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