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Chemistry, 02.10.2021 05:20 chrissycherry

Identify the first step in preparing a spectrophotometer for use.

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Less stable  hope this
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Answer from: Quest
It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).
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The answer would be solvent
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Answer from: Quest
Answer is: hydrogen is being oxidized.chemical reaction: co₂ + h₂ → co + h₂o.oxidation half reaction: h₂ → 2h⁺ + 2e⁻.reduction half reaction: c⁺⁴ + 2e⁻ → c⁺².oxidation is increase of oxidation number, hydrogen change oxidation number from neutral charge (in molecule of hydrogen) to oxidation number +1 (in water).

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Identify the first step in preparing a spectrophotometer for use....

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