Nicotine, an alkaloid in the nightshade family of plants that is mainly responsible for the addictive nature of cigarettes, contains 74.02% C, 8.710% H, and 17.27% N. If 40.57 g of nicotine contains 0.2500 mol nicotine, what is the molecular formula?

Q: 7) Look at the lattice structure of each solid and match it with the type of solid. cr Zn Si or C O…

A: We would check the position of atoms in each given structure.

Q: An analyst was measuring the performance of a HPLC column. The test solute was Toluene (5 µL). The…

A: To find out the mobile phase velocity, number of theoretical plates and height equivalent to…

Q: which of the following phase transitions is/are exothermic? 1. liquid water evaporating into the…

A: In this question, we will selecting those statements which are exothermic process.  Exothermic…

Q: Problem 9: Solvolysis of the following cyclic chloroalkane yield two products corresponding to…

A: Given is nucleophilic substitution reaction.  This reaction follows SN1 mechanism.  And we get…

Q: For parts a and b calculate 1. The formal charge for all the non-hydrogen atoms in the molecules for…

A: Formal charge= Valance electron - unbounded electron - 1/2 bonded electron

Q: Which of the ions gives a formal charge that is an accurate picture of where the charge really is?…

A: Formal charge = number of valence electron - Number of lone pair - 1/2 (Bond pair )

Q: Gentamicin sulfate is a water-soluble antibiotic that is used to treat a variety of bacteria,…

A: 8.)  We would use conversion factor to convert mass from grams to kg .  Then using the drug order,…

Q: The ideal gas constant R is: R = 8.314 J / K*mol What is the value of R expressed in units of L…

A:

Q: What is meant by the first compound notation?

A: In chemistry, a compound - is a substance that is made up of two & more diverse chemical…

Q: n = 4 Express your answer as an integer. Suppose that in an alternate universe, the possible values…

A:

Q: Am I drawing the resonance correctly for each? Thank you

A: Resonance structure: If the Lewis structure of a molecule or ion cannot explain by a single…

Q: B. Give a reasonable synthesis pathway for the transformation below. You may use any organic and…

A:

Q: NH₂ Br₂ AlBr3 HNO3/H₂SO4 OH NH₂ Br₂ AlBr3 NO2 HNO3/H₂SO4

A:

Q: Dumb question, just starting to learn about mass spectometry. I know we have to memorize the common…

A: molar mass is 72 molecular ion have (M+.) = m/z = 72 (M-15) = m / z = (72 - 15) = 57 so (M-15)…

Q: X tetracyanoethylene (A) Dipole-dipole interactions SEG London dispersion forces -0=1 -3=1…

A: The attraction forces between the different molecules are known as intermolecular forces. In general…

Q: 1-5. How do you make 0.5 L of pH 7, 0.1 M phosphate buffer (pKa=7.21) with NaH₂PO4 (MW 119.98) and…

A: pKa = 7.21 0.5 L of 0.1 M phosphate buffer = 0.5 L * 0.1 mole / L = 0.05 mole  Now  let mole of…

Q: Calculate the number of moles in 21.0 g of each of the following: Y Part D Gaz Sa Express your…

A: Part D Given, mass of Ga2S3 = 21.0 g moles of Ga2S3 = ? Note:  molar mass of Ga2S3 = 235.64 g/mol

Q: MASS 100 1 5045 % of Base Peak IR %Transmittance 100 1540 50 4000 ¹H NMR 300 MHz ata T 50 M 5.0 557…

A:

Q: Me OH TSOH Me

A:

Q: 8. Given the following equilibrium reaction: H2O(g) + CO (g) H₂ (g) + CO2 (g) K = 0.036 If 0.75 M of…

A: The given chemical equation is  H2O (g) + CO (g) ⇔H2 (g) + CO (g) the value of equilibrium constant…

Q: 2.55 Draw a bond-line structure for each of the following compounds: (a) CH2=CHCH2C(CH3)3 (b)…

A:

Q: 55.09 AL Express your answer in moles to three significant Agures.

A: To calculate moles of Al in given mass , we would use molar mass of Al.

Q: MeCN n-BuLi; Et₂C=O Me OH Xan CN Me

A: n-BuLi act as base and deprotonate from CH3CN to form -CH2CN which act as nucleophile attack to…

Q: Determine the density of a metal weighing 342.0g that displaces 10.5ml of water when placed in a…

A:

Q: If 13,736 = 1.3736 x 10^n, What is the value of n?    Please give the value for n

A: This question is based on mathematical problem. Given that, If 13,736 = 1.3736 x 10n What is the…

Q: What answer should be reported with the correct number of significant figures, for the following…

A:

Q: Name the following ionic compounds: 1) V₂(SO4)3 2) Zn3P₂ 3) Sr(C₂H3O2)2 4)Cu₂0 Could you also please…

A: Name the following ionic compounds:   1) V2(SO 4)3   2) Zn 3P 2   3) Sr(C 2H3O2)2   4)Cu₂O

Q: solution is prepared by dissolving 32.0 g urea, (NH2)2CO, molar mass = 60 g/mol), in 150.0 g water.…

A:

Q: If 100 grams of CH4 is made to react with 200 grams of O2, what mass of CO2 (in grams) is formed?

A:

Q: It is often necessary to do calculations using scientific notation when working chemistry problems.…

A: Since, When we calculate the calculation of significant digit then lowest significant digit present…

Q: On a planet with different gravity, would the Molarity of water be different? Explain your reasoning

A:

Q: 1. Describe the preparation of a 4500ml solution of Nator 1500. Oppm starting from a solution of…

A: Concentration of the desired NaBr solution = 1500.0 ppm 1 ppm = 1 mg/L =>Concentration of the…

Q: The indicator methyl red has a pKHIn = 4.95. It changes from red to yellow over the pH range from…

A:

Q: A patient is prescribed 100.0 mg/day of antibiotic for 2 weeks. The antibiotic is available in vials…

A:

Q: Owen Some Statement Choose perfect for their (i) curhat would be the internat reaction temperature…

A:

Q: If 96.1 g of glucose (molar mass = 180.2 g/mol) is dissolved in 39.5 g of water, what is the vapor…

A: The answer to the following question is- Given, Mass of glucose = 96.1 g Molar mass of glucose =…

Q: Q3.4 Reflecting on Differences in Phases Think about what you already know about different phases of…

A: The different phases of matter like solid, liquid and gas can be converted into one another. If  the…

Q: If 100 grams of CH4 is made to react with 200 grams of O2, what mass of CO2 (in grams) is formed?

A: Given, mass of CH4 react = 100 g mass of O2 react = 200 g mass of CO2 formed = ? Note: molar mass of…

Q: Methanol isobutene If 45.0 kg of methanol are allowed to react with 70.okg of isobutene, what is the…

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

Q: Write the equilibrium constant for this reaction in terms of the equilibrium constants, K₁ and K2,…

A:

Q: The following information is given for bismuth at 1 atm: T 1627.00°C Tm = 271.00°C Specific heat…

A:

Q: EtO₂C .CO₂Et Br CHO NaOEt EtO₂C EtO₂C CHO

A: Here we have to synthesize  the following given  target compound  from the given starting material…

Q: 543.7 g + 568.45627 mL

A: Addition of two quantities can only be done if they have the same units.

Q: Rewrite this measurement with a simpler unit, if possible. 2.4 2 g.mL2 mL's

A:

Q: Write the rate law for the following elementary reaction: CH3CH₂SiH3(9) C₂H4(9) + SiH4(9) ► Use k,…

A:

Q: For each of the scenarios, identify the order with respect to the reactant, A. A → products The…

A: Given reaction:-       A---> products a)Half life of A is independent of the initial…

Q: 7. CHBr3 t-BuOK Br Br

A:

Q: Imagine that the container from the problem introduction is now filled with N identical gas…

A: Given a container with in the form of a cuboid have length (Lx), Width (Ly) and height Lz. The given…

Q: Consider the following endothermic reaction system at equilibrium: 2SO3(g) ₹ 25O₂(g) + O₂(g) Predict…

A: To study the affect of the changes on an equilibrium reaction, we would use Le-Chatelier's…

Q: The density of water at 4°C is 1 g/mL. What is this in oz/pt?

A: Given- Density of water at 4°C is 1g/mL

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.