Chemistry, 05.12.2020 02:40 itsmemichellel
Can some one help me please? also happy holiday peeps!
1. How do different plant structures increase the chances for successful reproduction? Use evidence to support your answer.
2.Why might there be an advantage for flowers that attract only one type of pollinator and exclude others? What would be the disadvantage? Explain your reasoning.
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Chemistry, 21.06.2019 17:30
What is the formula for the molecular compound nitrogen monoxide
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Chemistry, 22.06.2019 04:30
Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat
Answers: 2
Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
Chemistry, 22.06.2019 14:30
Is a pencil falling to the floor anon contact force, a force, or a contact force
Answers: 1
Can some one help me please? also happy holiday peeps!
1. How do different plant structures increas...
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