Chemistry Question

Q: Calculate the pH when 90.0 mL of 0.200 M HBr is mixed with 30.0 mL of 0.400 M CH₃NH₂ (Kb = 4.4 × 10⁻...

A: The negative logarithmic concentration of hydrogen ions in solution is called pH. It is an indicator...

Q: Acetaminophen (pictured) is a popular nonaspirin, "over-the-counter" pain reliever. What is the  mas...

A: Formula of Acetaminophen = C8H9NO2 molar mass of C8H9NO2 = 151.17 g/mol molar mass of C = 12.0107 g/...

Q: A gold block initially at 62.9°C is put into 120 grams of H,O at 25.8°C in a container. The mixture ...

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Q: A solution containing a metal ion (M2+ (aq)) is electrolyzed by a current of 7.8 A. After 15.5 minut...

A: The amount of substance that undergoes a chemical reaction at any electrode during electrolysis is p...

Q: What is the reaction that represents the combustion of C6H12O2

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Q: Using any necessary inorganic reagents, show how you would convert acetylene and isobutyl bromide to...

A: The conversion of acetylene and isobutyl bromide into meso-2,7-dimethyloctane-4,5-diol is show below...

Q: When mixed in the presence of water, the elements Zn and I2 react to produce the compound zinc iodid...

A: The balanced chemical reaction is given as : Zn (s) + I2 (s) → ZnI2 (aq)

Q: (a) Draw all valid resonance contributors for this iIon. Show how the electrons can be moved using c...

A: Resonance structures may be defined as the collection of structures that contribute towards resonanc...

Q: .N. HNO3 H2SO4 ОН Br Cl2 FeCl3 H2SO4

A: The above substrates are all the substituents of benzene. The electrophilic substitution reaction of...

Q: (G) Show the delocalization Of Charges in the following Structures. Draw the resonance forms and ind...

A:   Resonance structures may be defined as the collection of structures that collectively represent th...

Q: a) Determine the molar mass (also known as molecular weight or molecular mass) of the following mole...

A: a. Determination of the molar mass: The mass of one mole of molecules is called molar mass. The mola...

Q: Give the formula for the following compounds. 1. Nitrous acid 2. Manganese (1I) phosphate 3. Silver ...

A: Since the question contains multiple parts, by default we can answer only first three parts. Please ...

Q: A compound contains 47.08% carbon, 6.59% hydrogen, and 46.33% chlorine by mass; the molar mass of th...

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Q: Based on the solubility table in your lab handout for experiment 2, what is the outcome of the doubl...

A: Chemicals reactions are the reaction in which any chemical change occurs. They are represented by ch...

Q: Draw structural formulas for the alcohol formed by hydroboration-oxidation of each alkene.

A:   In a hydroboration-oxidation of alkene, Alkenes reacts with the BH3 followed by H2O2 and NaOH. Dur...

Q: A thin stream of water bends toward a negatively charged rod. When a positively charged rod is place...

A: A thin stream of water bends in the same direction either the positively charged or negatively charg...

Q: What kinds of functional groups are in Caffeine? I got 2 amides, one amine, and one alkene functiona...

A: The molecular structure, IUPAC, and a molecular formula of caffeine are shown below.

Q: Determine the molar mass (also known as molecular weight or molecular mass) of the following molecul...

A: Molar mass of compund= molar of one element×no of atom+ molar mass of second element×no of atom of s...

Q: Please answer the following questions: 1.) What is electroplating!

A: Note: We’ll answer the first question since the exact one wasn’t specified. Please submit a new ques...

Q: When mixed in the presence of water, the elements Zn and I2 react to produce the compound zinc iodid...

A: For a given reaction a chemical equation is its symbolic representation in the form of chemical symb...

Q: How many liters of a 0.0 550 M KCl solution containing 0.163 moles of KCl

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Q: How many lone pairs are on the Br atom in BrCl2-

A: Lewis dot structure: The last shell electrons are called as valence electrons. Valence electrons of...

Q: How many moles of nitrogen are formed when 85.6 g of KNO3 decomposes according to the following reac...

A: First convert mass into mole by dividing molar mas software KNO3  Then use mole-mole relationship

Q: Identify the constitutional isomers in the following pairs of compounds

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Q: An unknown metal with mass (2.480x10^1) g absorbs (6.15x10^1) J of heat. The temperature of this met...

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Q: A point of bromine. The experimental melting points are listed below from a to e. Which one should h...

A: The value is said to be precise when the experimental values is most close to the actual accepted va...

Q: Dimensional Analysis :  The radius of an Al atom is 0.143 nm. How many Al atoms would have to be lai...

A: While calculating the number of items, divide the total length by length of each value.

Q: vacuum filtration uses suction to speed up the filtration process?

A: In the preparation of the organic or inorganic compound, the compound formed is a precipitate. The p...

Q: You are given a sample that contains a mixture of the following two arsenic-containing minerals: ger...

A: Given : Mass of mixture = 57.38 g Mass of As2O5 formed = 36.03 g Assuming moles of NiAsS in the mixt...

Q: Please show in details how to prepare the target molecule? You must use benzene as one of your react...

A: The given compound is asymmetrical ketone. Benzene can be converted to tert-butyl benzene via Friede...

Q: Please complete table with explanation

A: As you not specifiy so i am giving asser of first 2 question as per guidlines Use relation  Molality...

Q: Why can we use a gas mixture, such as air, to study the gen-eral behavior of an ideal gas under ordi...

A: An ideal gas is a theoretical gas composed of many randomly moving point particles that are not subj...

Q: Regular treatment with low dose aspirin is used to help prevent cardiovascular disease. How many asp...

A: The molecular formula of aspirin is C₉H₈O₄. The number of molecules present in 240 mg of aspirin has...

Q: Standard temperature and pressure are (1atm=760mmHg)

A: Standard temperature and pressure(STP) is 273.15k(0°C,32°F) and 1atm(101.3kpa)

Q: Aluminium sulphate (alum) is added to water with a pH of 7.2. Based on the reaction below,calculate ...

A: The given reaction is the hydrolysis of the salt. The salt here is Al2 (SO4)3 which on hydrolysis gi...

Q: using the VSEPR model, the electron domain geometry of the central atom in BrF4- is

A: In Brf4- , Br have 2 lone pair and 4 sigma bond so it have stearic number is 6  Sp3d2 hybridisation ...

Q: Express6.0 * 103 m using a prefix to replace the power of ten.

A: In powers of ten notation, large numbers are written using ten to a power, or exponent.

Q: Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in th...

A: Redox reactions are the combination of reduction and oxidation reactions. The type of reaction in wh...

Q: Calculate the freezing points of 0.40 molal aqueous solutions of (I) NaNO, 4. and (2) MgCI, Assume t...

A: NOTE : The formula of salts given is incorrect. The correct formula are 1) NaNO3 and 2) MgCl2. The d...

Q: 20 &.23

A: Answer of Q20: 0.806 m of solution of iron (III) nitrate contains 0.806 mol of iron (III) nitrate in...

Q: Convert attached compound to hex-1-yne, HC=CCH2CH2CH2CH3.

A: Given compound:

Q: Sea water contains 3.5% NaCl, by mass. (a) If the density of seawater is 1.02 g/mL, how many grams o...

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Q: Given that the initial rate constant is 0.0160s−1 at an initial temperature of 30  ∘C  , what would ...

A: Here activation energy is  44.3×103j/mol ln(k2/k1)=Ea/R(1/T1-1/T2) And get the answer

Q: 548.8 + 0.2 x 55.4±0.6 (1142.9 ± 0.6 – 171.0±0.5) ANS: Absolute uncertainty: Percent uncertainty:

A: The value which gives the range of true value when combined with reported value is known as absolute...

Q: The activation energy of a certain reaction is 48.1 kJ/molkJ/mol . At 30  ∘C ∘C , the rate constant ...

A: Given : Activation energy, Ea = 48.1 KJ/mol = 48100 J/mol                                           ...

Q: 9. When 0.625 grams of ethanol (C,H,OH) undergoes a bomb calorimeter attaining temperature differenc...

A: In a combustion reaction, the heat of reaction is given by the enthalpy of the same reaction i.e. en...

Q: Methanol and propan-2-ol form a homogenous solution. Which type(s) of forces are involved?     ...

A: They have dispersion force, dipole-dipole, hydrogen bonding Dipole-dipole is a special type of Hydro...