1. How many liters of pure oxygen gas, measured at 45.2 °C and 144 kPa, are required for the complete combustion of 5.60 L of acetaldehyde gas (C₂H4O), measured at STP?

Q: Be sure to answer all parts.Calculate the concentration of OH ions in a HCI solution whose hydrogen…

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Q: Consider the following equation: NH 4NO 3 (s) --> N 2O (g) + 2H 2O (g) 100.0 g ammonium nitrate is…

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Q: When 125 ml of 0.175 M Pb(NO₂), is mixed with 145 ml. of 0.210 M KBr. 4.92 g of PbBr, is collected.…

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Q: How many faradays must pass through an electrolytic cell to reduce 0.45 mol Na+ ion to sodium metal?

A: According to Faraday's Law of electrolysis, one gram equivalent of any substance is generated at the…

Q: How much calcium would you ingest by drinking one 8 oz glass of your tap water? Show all…

A: Average concentration of CaCO3 in ppm = 52.07 ppm = 52.07 g of CaCO3 in 106 ml of water…

Q: 1. As part of a classroom demonstration, I shine a 650 nm red laser onto a block of Cadmium Sulfide…

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Q: Rank the following compounds in order of their acidity. Åome ii OMe i ii Compound i Compound ii…

A: acidity of a particular compound can be found by finding the conjugate base stability. I.e. if the…

Q: MnO4– + I– →  MnO2 + IO3–  In the reaction above what substance is the reducing agent?     MnO2…

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Q: MnO2 (s) + 4 H+(aq) + 2 NO (g) → 3 Mn2+(aq) + 2 H2O (l) + 2 NO3–(aq) In the reaction above what…

A: Since, In oxidation reaction, Oxidation number increases or number of oxygen increases or number of…

Q: magnesium + silver nitrate

A: Since, Balanced reaction means that both side number of atom present in equal number. Thus,

Q: 2. Phosphorous pentachloride is a fine grained powder, ranging in colour from colourless to pale…

A: Equilibrium Constant , Kc = 5.7 × 10-4

Q: 12 1 2 3 4 Peak 11 HSP-43-200 10 9 8 7 Chemical Shift 9.756 2.21 2.1 0.986 6 5 ppm Multiplicity…

A: Proton nuclear magnetic resonance is the application of nuclear magnetic resonance in NMR…

Q: Assign R/S to the following organic compounds then give its IUPAC Nomenclature

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Q: D Study the chemical equations in the table. Equation Number 1 2 3 Balanced Equation 2 Al(s) + 3…

A: An oxidising agent is the one which oxidises others by itself getting reduced. A reducing agent is…

Q: Write the Lewis structure for the following covalent compounds: Start with the sum of valence…

A: A Lewis Structure is simplified representation of the valence shell electrons in a molecule. It is…

Q: What is the total number of electrons lost in the substance oxidised in the reaction below? Zn (s)…

A: Redox reaction involves the movement of electron from one species to another species  Here we are…

Q: Consider the following electrochemical cell in which X is an unknown metal:        Pt (s) | Cl–(1 M)…

A: Given :-  The given electrochemical cell  Standard cell emf = E0 = 0.23 V  Temperature = 25 oC…

Q: HO CO₂Me H*/Acetone НО Acetone is here how differenet it will be?

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Q: The conductivity of an electrolyte increases due to one of the followings: A. Increasing the…

A: The correct answer is D. Increasing the migration of ions due to electrode polarization.   The…

Q: What is the total strain energy of 2,2- dimethylpropane in an eclipsed conformation? Given: For CH3…

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Q: Which statement is true about the following redox reaction? 2 NaOH + Cl₂ →NaOCI+ H₂O + NaCl 2 OH is…

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Q: Complete the table and propose a structure

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Q: A Mg|Mg2+ || Co2+ |Co galvanic cell is constructed in which the standard cell voltage is 2.09 V.…

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Q: 8. What should the height of liquid be in a TLC elution jar? a. There should be no liquid in the jar…

A: The correct answer is (b) The liquid should be just below the spot line so that it does not dissolve…

Q: What are the experimental errors and results that you may encounter in your qualitative analysis?…

A: Answer: Qualitative Analysis:Qualitative analysis the determination of non numerical information…

Q: Which of the following is the strongest acid? Electronegativies: H = 2.2, Cl= 3.2, Br = 2.9, F = 4.0…

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Q: Nitric oxide is a highly reactive, colourless and poisonous gas. It reacts with bromine as shown in…

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Q: Complete and balance the following redox equations using the smallest whole-number coefficients. The…

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Q: stions [References] Give the molarity in M of a solution containing 0.1758 moles of NaOH in 125 mL…

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Q: The density of water, H₂O(1), is 1.0 g ml.. How many atoms of oxygen are present in 2.5 L of pure…

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Q: Calculate the mass in grams of NaOH required to make up a 0.855 M aqueous solution in a 1000.0 mL…

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Q: Consider the following thermochemical equation: 2X2Y6(g) + 7O2(g) ⟶ 4XO2 + 6Y2O Δ?= -2.615 x 103 kJ…

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Q: H3PO4 -0.93 H4P₂06 -0.28 a H3PO3 b H₂PO2 -0.50 -0.51 → P -0.06 →→ PH3

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Q: Question 14 The calculated pH of a 0.00001 M HBr (aq) is Note that HBr is a strong acid. ⒸA. 1 OB. 4…

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Q: 6. Which of the following alcohols is oxidized to a ketone by chromic acid? I. II. Ш. OH OH CH2OH…

A: Please find the solutions for the questions in the attached image.

Q: In the following reaction, identify the oxidizing and reducing agents.

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Q: Does the following reaction absorb or release energy? (1) Cr(g) + e → Cr (g) Is it possible to…

A: Given reaction is Cr + e -----> Cr-

Q: 27. Phosphate buffers are essential in living systems. What is the pH of a buffer contains 0.150 M…

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: Consider the following balanced chemical equation: 2 H₂O(g) +2 SO₂(g) + 2 H₂S(g) + 3 O₂(g) A…

A: Dear student since you have posted multiple questions, According to BARTLEBY QnA guidelines We are…

Q: Barium hydroxide. Ba(OH) 2, reacts with HBr according to the following equation. Ba(OH)₂ 171.34…

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Q: For one mole of argon gas at 450 K and 1 atm, calculate the qtotal. The ground electronic state has…

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Q: B A student poured 100 ml of water into a coffee calorimeter, noted that the temperature of the…

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Q: The following skeletal oxidation-reduction reaction occurs under acidic conditions. Write the…

A: Recall the given oxidation-reduction reaction,                            Co2+  +  NO  →  Co  +…

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Q: 19. What is the equilibrium expression for the following reaction? C(s) + CO2(g) 2 CO(g) A) B) C) D)…

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Q: Write a report on how Total Dissolve Solid (TDS) is done at the laboratory.

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Q: Suppose that 40.0 mL of 0.100 M NaOH(aq) is added to 10.0 mL of 0.200 M Cu(NO3)2(aq). (a) Write the…

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Q: The Oxidation no. of the Underlined element in the given compounds are CrO3 Cr₂O7-2 I O +3, +3 +6,…

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Group 15 elements

The elements of group 15 are phosphorus, nitrogen, bismuth antimony, and arsenic. The most abundant element which is present in the air is nitrogen and the percentage of nitrogen present in the air is 78%. In the free state, the elemental nitrogen is present as diatomic gas (N2). In the organic matter obtained from plants and animals, phosphorus is the dominant element present. In nucleic acids, phosphate groups are present. Phosphates are also found in teeth and bones. The other elements arsenic, bismuth, and antimony are found as sulfides. Arsenopyrite, bismuth glance, and stibnite are examples of sulfides of arsenic, bismuth, and antimony respectively.