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Chemistry, 21.06.2019 14:10
The rock in a lead ore deposit contains 89 % pbs by mass. how many kilograms of the rock must be processed to obtain 1.5 kg of pb?
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Chemistry, 21.06.2019 16:30
Jewelweed, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. these structures are favorable because they a. can cause genetic changes to occur. b. prevent germination within the seed pod. c. aid in the dispersal of the species. d. attract insects that aid in pollination.
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Chemistry, 22.06.2019 01:00
Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon
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Chemistry, 22.06.2019 11:00
3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?
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History, 16.10.2019 02:30
Biology, 16.10.2019 02:30
Social Studies, 16.10.2019 02:30
Social Studies, 16.10.2019 02:30
History, 16.10.2019 02:30
Chemistry, 16.10.2019 02:30
Chemistry, 16.10.2019 02:30
History, 16.10.2019 02:30
History, 16.10.2019 02:30
History, 16.10.2019 02:30
Biology, 16.10.2019 02:30
Biology, 16.10.2019 02:30