(c) Cu + S → CuS is a redox reaction
Explanation:
We have the following chemical reactions:
(a) K₂CrO₄ + BaCl₂ → BaCrO₄ + 2 KCl
(b) Pb²⁺ + 2 Br⁻ → PbBr₂
(c) Cu + S → CuS
There is a redox reaction where the elements are changing the oxidation state. The reaction (c) is such a case.
Cu + S → CuS
Cu in elemental state have a oxidation number of 0 and in CuS (copper sulfide) have a oxidation number of +2.
S in elemental state have a oxidation number of 0 and in CuS (copper sulfide) have a oxidation number of -2.
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redox reactions
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Answer:
Tides: the rise and fall of sea levels due to gravitational forces
Tidal bulges: two ocean bulges created on opposite sides of the earth due to the moons gravitational pull and the oceans resistance
Spring tide: tides where there is the greatest difference between high and low tide
Neap tide: tides where there is the least difference between high and low tide
Answer:
Iron (Fe)
Explanation:
# of protons is the atomic number of the element
the element with the atomic number 26 is Iron
with 26 electrons this means it is Iron with no charge
with 30 neutrons this means the atomic weight will be
26 (protons) + 30 (neutrons) = 56
the real atomic weight of iron listed on the periodic table is 55.845, this rounded up is 56.
Answer:
This process. results in many different types of organisms with different characteristics from their ancestors. Favorable traits are traits that promote an organism's success in a particular environment.
Explanation:
The answer should be D. DNA
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