44g water.
10. 15,000.
11. Since water has an uneven distrobution of electrical charge, where the end of the oxygen atom is negatively charged and the ends of the hydrogen atoms are positively charged, a water molecule is polar.
10. 15,000.
11. Since water has an uneven distrobution of electrical charge, where the end of the oxygen atom is negatively charged and the ends of the hydrogen atoms are positively charged, a water molecule is polar.
13. a. K+ ion
b. Br- ion
a. The negatively charged end, the oxygen end.
b. The positively charged end, the hydrogen end.
14. Heavy metals are called heavy because thheir atoms have greater masses than those od essential metallic elements, and therefore, are harmful to humans and other organisms.
15. Numbness, staggered walk, tunnel vision, and brain damage are (four) symptoms of heavy metal poisoning. Heavy metal poisoning can lead to death; it causes damage the nervous system, brain, kidneys, and liver.
16. a. lead
b. mercury.
A.
1) Soil surrounding heavily traveled roads, for it may have absorbed automobile exhaust from the gas from cars that contained tetraethyl lead before the 1970s.
2) Flaking leaded paint in houses built before 1978.
B.
1) Thermometers and florescent light bulbs.
2) Fish exposed to mercury in the water.
a. The negatively charged end, the oxygen end.
b. The positively charged end, the hydrogen end.
14. Heavy metals are called heavy because thheir atoms have greater masses than those od essential metallic elements, and therefore, are harmful to humans and other organisms.
15. Numbness, staggered walk, tunnel vision, and brain damage are (four) symptoms of heavy metal poisoning. Heavy metal poisoning can lead to death; it causes damage the nervous system, brain, kidneys, and liver.
16. a. lead
b. mercury.
A.
1) Soil surrounding heavily traveled roads, for it may have absorbed automobile exhaust from the gas from cars that contained tetraethyl lead before the 1970s.
2) Flaking leaded paint in houses built before 1978.
B.
1) Thermometers and florescent light bulbs.
2) Fish exposed to mercury in the water.
17.Hydroxide (OH-) is found in many bases.
18. Hydrogen (H) is found in most acids.
19.
a. seawater (basic)
b. drain cleaner (basic)
c. vinegar (acidic)
18. Hydrogen (H) is found in most acids.
19.
a. seawater (basic)
b. drain cleaner (basic)
c. vinegar (acidic)
d. pure water (chemically neutral)
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