Calculate the percent composition of boron in sodium borate. Group of answer choices 15.230% 9.2428% 11.287% 13.217% 8.4608%

Q: Must find concentration of H2O2 (hydrogen peroxide)  Tubes     Volume of 3% H2O2  Volume of H2O…

A: Using dilution formula, concentration of H2O2 (%) after dilution can be calculated.

Q: ical formula for formic acid is HCO₂H. To make this buffer, let's say we start with 2.53 M sodium…

A: As per Bartley expert guidelines, I am allowed to answer first one question at a time.  Please re…

Q: Which two of the following compounds represents a pair of enantiomers? НО... I OH HO II OH HOD OH…

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Q: Br он + НО OH Li(tBuQ)3AlH3 MeOH 1. LiAIH4 2. H30+ cat. HCI

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Q: What is the rate for the first order reaction A → Products when [A] = 0.273 M? (k = 0.360 1/min)

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Q: Be sure to answer all parts. Label each diagram as a strong electrolyte, weak electrolyte, or…

A: In first diagram upon very minute observation we found that 7 molecule only 1 molecule is…

Q: A 100-mL sulfide-containing water sample was titrated with 12.15 mL of 0.041 M AgNO3 to determine…

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Q: If a Xe-134 releases an alpha particle, what is the isotope that is produced?

A: If a Xe-134 releases an alpha particle, what is the isotope that is produced?

Q: A solution of 0.00475 M NaOH has a pH of  _________.     11.68     4.64     6.8 X 10-11…

A: Given, Concentration of NaOH solution = [NaOH] = 0.00475 M pH of the solution = ? Note: NaOH is a…

Q: Given the galvanic cell: SCE || Ag*(aq)|Ag, at 25 °C, and the half-reactions. Agt + e → Ag(s), Eº=…

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Q: In what conditions alkene I could be converted to alcohol II: O 03, Zn H20 O 1-BH3, 2- H202, NaOH O…

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Q: Determine whether the following reactions will undergo E1 or E2 mechanism. Show the mechanism and…

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Q: 1. Provide the correct IUPAC name for the following amines. CH3 H3C. H3C. NH H3C CH3 CH3 CI CI N H…

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Q: Which of the following structures represent * trans-1,3-dimethylcyclopentane?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A Compound may have a possible number of which is H ₂ C 1 stereoisomers formula 2^ (n= number of…

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Q: Spell out the full name of the compound. 1-methoxyhept-2-yn-6-one Submit Previous Answers Request…

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Q: A 0.937-g sample containing Ca2+ was dissolved to produce a 500-mL stock solution. A 50-mL aliquot…

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Q: HO OH KMnO4 NaOH, A KMnO4 NaOH, A 1.2 eq. Li- 2. Н.О 1. HNNH2 2. КОН, Д 1. SOCI2 ноя

A: #1 & 2: Hot(∆) alkaline(NaOH) KMnO4 is a very strong oxidizing agent and oxidizes each…

Q: For an experiment 33.5mL solution of potassium permanganate with a 1.45 M concentration is needed.…

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Q: calculate the mole ratio of acid and base and suggest what the acid could be.

A: Titration is a kind of Volumetric analysis in which the unknown concentration of an analyte is…

Q: Which of the following ions could be used to separate Cl(aq) from SO4² (aq) by precipitating one of…

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Q: Select the mechanism(s) that would occur in this reaction and select all possible products. (you may…

A: In presence of alkoxide base, alkyl halide undergo both E2 and SN2 reaction . In case of E2…

Q: Th Pa U Np Pu Am Fm Md No Lr Write the complete electron configuration for the copper(II) ion. Using…

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Q: ✓ The molecular formula of this molecule is NH

A: chemical formula gives the information about the total number of atoms of each element in the…

Q: In what conditions alkene I could be converted to alcohol II: 03, Zn H20 O 1-BH3, 2-H202, NaOH…

A: Hydroboration–oxidation reaction: Alkene gives an electrophilic addition reaction with borane.…

Q: A 0.2160 g sample of primary standard grade HgO (MM = 216.59) was dissolved in 75 mL of an aqueous…

A: Given: sample of HgO = 0.2160g volume of KI = 75mL liberated OH- needs HCl = 22.13mL To calculate:…

Q: Calaiste t PH and the POH FOR a 06 M Solution of Ca(OH)₂

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Q: d. Draw the elimination product that would form upon reaction of (4S)-1-bromo-4- methylhexane with…

A: The reactant used is (4S)-1-bromo-4-methylhexane. The reagents used are (CH3)3COH and (CH3)3COK.

Q: Identify the organic class to which the compound belongs based on the functional groups present.…

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Q: Question 30 Identify the organic class to which the compound belongs based on the functional groups…

A: In the Organic chemistry , we can identify different compound by using there functional groups .…

Q: QUESTION 7 Give the structure of the product of the following reaction: acid catalyst H₂C=CH₂ + H₂O…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 6. A tank having a volume of 0.10m³ is filled with oxygen at a pressure of 4.0 × 10 Pa and…

A: We need to use ideal gas law to find the mass of oxygen.

Q: has a molar mass of 99.0 g/mol. Analysis of a sample shows that it contains 24.3% c and rest is…

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Q: MISSED THIS? Read Section 5.2 (Pages 168-173); Watch KCV 5.2, IWE 5.2. A laboratory procedure calls…

A: Given, molarity of NaNO3 solution = 1.2 M = 1.2 mol/L Volume of NaNO3 solution = 450.0 mL = 0.450 L…

Q: For each system listed in the first column of the table below, decide (if possible) whether the…

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Q: 4. Draw the structure for the product formed in each of step of the following synthetic sequence.…

A: Given,  The products formed in each step of the synthesis is:

Q: Consider the oxidation of NO to NO₂: NO(g) + O2(g) → NO₂ (g) Standard thermodynamic quantities for…

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Q: Give the periodic group number and number of valence electrons for each of the following atoms. a. S…

A: In the periodic table, the elements are arranged according to their atomic number (electronic…

Q: If AH is a stronger acid than BH, which of the following is/are true? 1 A is a stronger base than B.…

A: Given that AH is stronger acid than BH. Based on given statement, we have to write the true…

Q: Rank the following aqueous solutions in order of decreasing freezing point. Select 1 (highest…

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Q: Assuming it occurred in an acidic solution, what is the correctly balanced equation for H202 +…

A: (1) H2O2 + Sn2+--- H2O + Sn4+ Balanced in acidic medium ?   (2) ∆Go = 12 kJ/mol = 12000 J/mol n = 3…

Q: What of the following options describes the term "pH and pOH"? O a. The negative logarithm (base 10)…

A: •pH=> it is a scale to determine the concentration of H+ ion. •pOH=>It is a scale which…

Q: A model for ICI5 is shown in the chem3D window. ICI5 has square pyramidal geometry. ball & stick v +…

A: We are given a 3D model of ICl5 that has a square pyramidal geometry.

Q: A 150-ml sample of water containing Ca2+ and Mg2+ was treated with sodium hydroxide solution to…

A: Many metal ions form stable complexes with Ethylenediaminetetraacetic acid (EDTA) so EDTA is used to…

Q: Determine the concentration of H,O* in a 0.064 M solution of oxalic acid, H₂C₂O4. H_C,O,(@q) +HO(0)…

A: Given, Concentration of oxalic acid = 0.064 M

Q: To what volume should you dilute 54 mL of a 13 M stock HNO3 solution to obtain a 0.106 M HNO3…

A: The given information is as follows: The initial volume of the HNO3 solution V1= 54 mL The initial…

Q: Give the periodic group number and number of valence electrons for each of the following atoms. a. S…

A: Since you have asked multiparts, we will solve the first three subparts for you. If you want any…

Q: Use appropriate data to determine which statement is true of the voltaic cell picture here.

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Q: Ph. Br Br о ОН ?

A: Carbonyl compounds can be reduced to hydrocarbons using  reduction processes such as Wolff-Kishner…

Q: A gas has a pressure of 645 Torr at 128 °C. What is the temperature in Celsius if the pressure…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.