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choli [55]
3 years ago
15

Please help me!!!! Thank you so much! I’m giving away 25 points for this one! I need both the problems solved

Chemistry
1 answer:
pishuonlain [190]3 years ago
7 0
23. a. Mn undergoes oxidation
b. S undergoes oxidation

24. a. Oxidizing agent - CuO
Reducing agent - H2
b. Oxidizing agent - PbO
Reducing agent - CO
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Which gas is produced when dilute hydrochloric acid is added to a reactive metal.
Digiron [165]

Hydrogen gas is produced when dilute hydrochloric acid is added to a reactive metal.

Balanced molecular equation of sodim metal with hydrochloric acid:

2Na(s) + 2HCl(aq) → 2NaCl(aq) + H₂(g).

Ionic equation: 2Na(s) + 2H⁺(aq) + 2Cl⁻(aq) → 2Na⁺ + 2Cl⁻(aq) + H₂(g).

Net ionic equation: 2Na(s) + 2H⁺(aq) → 2Na⁺(aq) + H₂(g).

Sodium is oxidized from oxidation number 0 (Na) to oxidation number +1, hydrogen is reduced from oxidation number +1 to oxidation number 0 (hydrogen gas H₂).

Another example:

Balanced chemical equation: Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)

Word equation: zinc + hydrochloric acid → zinc chloride + hydrogen gas

More about hydrogen gas:brainly.com/question/24433860

#SPJ4

7 0
2 years ago
What does the periodic table have in common with a calendar?
Angelina_Jolie [31]

Answer:

Calendar and periodic table both have repetitive patterns.

Explanation:

In calendar the days are arranged and divided into weeks whereas in the periodic table the elements are arranged in increasing atomic number and divided into groups

5 0
4 years ago
I can balance that freaking equation
EleoNora [17]
This doesn't seem like a question -_-
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The amount of energy released or absorbed as heat during a chemical reaction is called ___________.
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It’s either endothermic or exothermic
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How many moles of magnesium are needed to react with 3.0 mol of o2?
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The answer is 4.0 moles of magnesium
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