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Biology, 21.06.2019 19:00
Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.
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Biology, 22.06.2019 08:30
What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna
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Biology, 22.06.2019 14:30
Find the mass of the cone using the triple beam balance. a. 543.0 g b. 542.0 g c. 504.28 g d. 502.8 g select the best answer from the choices provided a b c d
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Biology, 22.06.2019 16:30
How do disease caused by bacteria and disease caused by viruses react to antibiotics
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