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Prior to their phaseout in the 1980s, chemicals containing lead were commonly added to gasoline as anti-knocking agents. a 2.475 g sample of one such additive containing only lead, carbon, and hydrogen
asked
May 2, 2018
Chemistry
college
2
answers
2
votes
147k
views
The National Ambient Air Quality Standards (NAAQS) are maximum allowable levels for _____ harmful pollutants. sixteen six sixty ten
asked
Apr 2, 2018
Physics
high-school
2
answers
0
votes
220k
views
“Matter cannot be destroyed or created, only changed” is the definition of: a. Newton’s Law of Motion b. The Law of Conservation of Mass c. Kinetic Molecular Theory d. Dalton’s Postulates
asked
May 7, 2017
Chemistry
high-school
1
answer
0
votes
139k
views
Are disaccharides formed by dehydration synthesis?
asked
Apr 23, 2017
Biology
high-school
1
answer
1
vote
227k
views
a sweater that originally cost $40 is on sale for 10 percent off. what is the amount of the discount?
asked
Apr 7, 2017
Mathematics
high-school
2
answers
1
vote
47.8k
views
What is the value of (63 + 9) ÷ 32 ?
asked
Mar 7, 2017
Mathematics
high-school
2
answers
5
votes
188k
views
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