The quadratic formula is used to solve for x in equations taking the form of a quadratic equation, ax² + bx + c = 0. -b ± Vb² – 4ac quadratic formula: X = 2a Solve for x in the following expression using the quadratic formula. 2x2 + 21x – 7.1 = 0 Use at least three significant figures in each answer. x = and x =

Q: atomic number = 17, atomic mass = 35.45, and symbol = Cl. %3D a. What is the element's name? b. How…

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Q: The reaction represented by the description "An atom of titanium-45 decays by beta emission" is O…

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Q: Which of the following statements about the binding of oxygen to deaxyhemoglobin is correct? Multple…

A: In the deoxy- myoglobin , Iron ( Fe ) is in Fe2+high spin. When it binds with oxygen the Iron is…

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Q: 4. A sample of processed meat scrap weighing 4.000 g is digested with concentrated H:SO, and…

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Q: 44. Identify the class of compound for each of the following hydrocarbon derivatives. (а) CH,—ОН (c)…

A: The class of the compounds is: a- Alcohols

Q: 42 Answer true or false. (a) The properties that make water a good solvent are its polarity and its…

A: (a) The properties that make water a good solvent are its polarity and its capacity for hydrogen…

Q: Determine the cell diagram for the reaction below. Assume platinum electrodes are used when no other…

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Q: H2SO4 Compound Delta Ho (kj/mol) Delta So (J/k . mol) S 0 31.88 O2 -285.8 69.9 H2O 0 205 H2SO4…

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Q: Cite 5 examples of carbohydrates and where they are commonly found.

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Q: Question 2 The reaction: Na + Feso4 - Nazso4 + Fe is REDOX reaction? O True False

A: Redox reaction is a reaction in which the oxidation number of the atoms are changed.

Q: Draw ALL POSSIBLE PRODUCTS, including stereochemistry and/or configuration whenever applicable

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Q: what

A: According to the question, we have a hydrogen concentration cell.  The cell diagram of the cell is…

Q: Determine which reaction is being described by the statements below? Gain of electron A. Oxidation…

A: Reduction is the process in which decrease in the oxidation state of a species takes place.…

Q: Determine the type of the following chemical reaction: CuCl2(aq) + NaOH(aq) -------------->…

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Q: Draw the structure(s) of the major organic product(s) of the following reaction. 1. Ag20/ aq. NaOH…

A: In this reaction, Ag2o which increase the electrophilicity nature of carbonyl carbon. For work up…

Q: 29. A sample of air was collected near a busy street in LA county. The air sample contained PM2.5…

A: Given: Mass of particle = 6.0 × 10-5 μg Measurements of container: length= 3.0 × 10-2 mwidth = 1.0 ×…

Q: How many of the following statements are true? i) Enantiomers are always chiral ii) A molecule that…

A: A carbon atom is the chiral if it is connected with four different groups. However enantiomers are…

Q: The following compound is the, enantiomer of 2-chlorobutane. H CI OR O T OS O it is not chiral

A: ->Enantiomer are the compounds having just opposite configuration . ->It a compound has chiral…

Q: 8CO2(g) + S13N4(s) AH = +461.05 kJ 8CO + 2N20 + 3SIO2 a) Is this reaction exothermic or endothermic?…

A: a.) Type of reaction acb be determined form sign of ∆H of reaction.  b.) The type of reaction can be…

Q: Which polymerization shown takes place by a condensation reaction? R-C-CH; + nH;C=CH; H: n NH CH;le…

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Q: 42 Answer true or false. 42.2 (f) In a solution that conducts electricity, cations migrate toward…

A: The answer is as follows:

Q: Predict the major substitution product only of each of the following reactions. Each of these…

A: Here we are required to predict the product of the SN2 reaction

Q: 15 Write equilibrium expressions for these reactions. (a) 2H,0,(g) 2H,0(g) + O,g) (b) 2N,0,(g)=…

A: Equilibrium expressions for the given reactions

Q: Thionyl choride, SOCI2, is a reagent commonly used to convert the -OH group of an alcohol to a…

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Q: Quéstion 8 Find the AH (in kJ) for the reaction below, given the following reactions and subsequent…

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Q: A carbocation is a good a) Lewis acid b) Lewis base c) neither

A: Lewis acid is an electron pair acceptor  Lewis base is an electron pair donor

Q: What is a standardization and why is it important?

A: Concept:  Standardization: Standardization is the process of determining the exact concentration of…

Q: Which of the following statement is correct? A. E2 is a concerted reaction in which bonds break and…

A: The statements given are,

Q: Write the reduction half-reaction for the corrosion of iron. Express your answer as a half-reaction…

A: Electrolysis is used to plate metal over the another metal surface.

Q: Give the IUPAC name

A: We have to predict the nomenclature of given compound.

Q: determine the products for the following chemical reaction: Mg(s) + 2HCl(aq) ---------->  A.)…

A: Reaction of metal with acid: When metal react with acid the following reaction take place, metal +…

Q: Which of the following reagents are suitable for reducing an amide to an aldehyde? Il…

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Q: Give the correct IUPAC name for the following compound. For alkenes, when appropriate, indicate…

A: In this question we have to tell the IUPAC name of the compound.

Q: 1.7. 100 BTUS are absorbed by a gas while the gas expands and perform 700 BTUS of work. Calculate…

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Q: 2 N2(g) + O2(g) 2 N2O(g) G° = 203.1 kJ and S° = -148.5 J/K at 262 K and 1 atm. This reaction is…

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Q: Write a balanced chemical equation for the titration of an aqueous sample of NaHCO3 with HNO3. Be…

A: • We need to write a balanced chemical equation for the titration of an aqueous sample of NaHCO3…

Q: Calculate AG for the electrochemical cell Fe(s) I Fe2*(aq) || Sn4*(aq) | Sn2*(aq) I Pt(s). Multiple…

A: Fe(s)/Fe2+(aq) // Sn4+(aq)/Sn2+(aq)pt(s)

Q: Determine the number of moles in a container of gas at STP with a volume of 99.2 L.

A: We know, at STP, one mole of any gas occupies 22.4 L volume. Or, 22.4L volume is occupied by 1mol of…

Q: Trial 1: Initial pH= 3.92mL Mass of KHP and Paper= 0.868g Mass of paper= 0.357g Mass of KHP= 0.511g…

A: The titration curves given for both the trials are,

Q: Calculate the half-life of a radioisotope if it decays to 12.5% of its radioactivity in 12 years.

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Q: Consider the four scenarios involving visible light. In scenario A, visible light has a wavelength…

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Q: What is the empirical formula for a compound containing 64.95% Tin 17.54% sulfur and the remainder…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: QUESTION 14 Given the first order constant of the radioactive decay of carbon-14 to the stable…

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Q: Which of the following polymers has a syndiotactic structure? A B D

A: On the basis of the stereochemistry the polymers are of three types: Isotactic polymer: In these…

Q: b. HNO, он OH с. OCH, d. но но. OH

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Q: You need a 25% alcohol solution. On hand, you have a 450 mL of a 20% alcohol mixture. You also ha…

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Q: Question 21 For the balanced equation below, how many grams of CO, could be produced from 2.25 g of…

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Q: A sample of fuming suifuric acid containing only SOs and sulfuric acid weighs 1.400 grams and…

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

Q: How many mL of 10.7 M HCIaq) are required to make 250.0 ml of 6.00 M HCI(aq) solution? Enter only a…

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.