Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl(aq), as described by the chemical equation MnO₂ (s) + 4 HCl(aq) MnCl₂(aq) + 2 H₂O(1) + Cl₂(g) How much MnO₂ (s) should be added to excess HCl(aq) to obtain 285 mL Cl₂(g) at 25 °C and 785 Torr? mass of MnO₂: Learning - g

Q: which element is oxidized in the reaction below? Fe2+ + H+ + Cr2O72- --> Fe3+ + Cr3+ + H2O

A: Oxidation is loss of electrons or increase in the oxidation state.

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A: a) How many total valence electrons are in O22- = 14 electrons  Explanation -->  For the peroxide…

Q: Which set of quantum numbers (n, l, me, ms) is correct when n = 3? O3,1,-1,-1 3,3,-1,-1 3,1,2,-2…

A: Correct answer -->  3,1,-1, -1/2

Q: Zn (s) Zn + Ni²+ Zn2+ (aq) (aq) → Zn²+ (ay) + Ni (0.112 M) || Ni2+ E = +0.37 V (2.53 M) Ni (5)

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Q: 3. A 50.0mL sample of 0.600 M NaOH is mixed with 150.0 mL sample of 0.400 M HNO3 in a coffee cup…

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Q: For the molecules HCN and CH3NH2

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Q: Can you explain how the by product is formed?

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A: Perchloric acid is strong acid in aqueous solution. It dissociates in the form of H+ and ClO4-.

Q: 32. c. Calculate the standard cell potential at 25 ∘C for Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) Wrong…

A: The standard cell potential can be calculated as:

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Q: Which of the following is an oxidation-reduction reaction?     A)  Ba(C2H3O2)2(aq)  +  Na2SO4(aq)…

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Q: Which transition metal ion has a noble gas electron configuration? O CO3+ O V5+ O Zn²+ Mn4+ Cu²+

A: To solve this problem we have to write the electronic configuration of the given ions .

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Q: Classify the basicity of ammonia, NH3, based on its reactivity in aqueous solution. Choose 1 answer:…

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Q: This diagram represents water in the liquid phase. Clicker Question: Which diagram represents water…

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Q: A sample of dichlorodibromosilane, SiCl₂Br2, contains 0.0402 mol of the compound. What is the mass…

A: Here, we have to find the mass of 0.0402 mol of SiCl2Br2.

Q: What is the major organic product formed by the following reaction? اسما I III X NH IV II e N-H ?

A: Correct option is ' D '

Q: II. Learning Experiences A. Clarifying Understanding Directions: Complete the given table. To answer…

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Q: Which of the following reactions is a substitution reaction (Note: For each choice, only the organic…

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Q: Question 5: What is the formal charge of Nitrogen and Oxygen atoms in the following? H-CEN-Ö:…

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Q: Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 83 ∘C , where [Fe2+]= 2.90 M and =[Mg2+]=…

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Q: Calculate the pH of a 0.17 M solution of HCIO, with Ka = 3.5x10-8. Type your numeric answer and…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".