Atomic number

Q: From the calibration curve using standard F solutions, the slope of the curve is -58.5 mV. When a fl...

A: Solution- Data Given- Slope of the curve (S) = -58.5 mV, E(potential) = 100.0 mV, K = Coulomb consta...

Q: What is the mass of one atom of I? O 6.641 x 10-23 g O 4.745 x 10-22 g O 2.107 x 10 22 g O 3.443 x 1...

A: To determine the mass of 1 atom of I, do the following : 1) Determine molar mass of the substance.  ...

Q: 2. Water is the universal solvent. A. Why is water considered the greatest solvent on Earth? B. Draw...

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Q: Suppose 3.61 g of chlorine, Cl2, are used to prepare dichlorine pentoxide, Cl2O5. How many moles of ...

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Q: Complete the table below for calculating the molar mass of the ionic compound copper(II) fluoride. N...

A: Molar mass of ionic compound is sum of molar mass of atoms in one formula unit. 

Q: major component of gasoline is octane C8H18 . When liquid octane is burned in air it reacts with ox...

A: We have to predict the moles of oxygen gas needed.  

Q: What is the mass of 4.63 x 1012 atoms of Fe? O 8.96 x 10-10 g O 4.29 x 10-10 g O 2.73x 10-10g O 1.62...

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Q: How many grams of Co are there in a sample of Co that contains 9.57×1023 atoms? grams

A: 1 mole of any atom corresponds to Avagadro's number i.e. 6.023 x 1023 atoms. Therefore, Cobalt (Co) ...

Q: Given the chemical equation: 2Al₂O₃ → Al + 3O₂, How many moles of Al is produced when there are 120g...

A: Here we have to determine the moles of aluminum metal produced by the reaction of 120 gram of Al2O3....

Q: I. Directions: Draw the lewis structures of the neutral atom and the ion of each element. Determine ...

A: Lewis structure of an atom, ion or a molecule represent the valence shell electrons of an atom or an...

Q: 443 471 502 360 Wavelength (nm) Lycopene Amax is 502 nm True False Absorbance

A: UV visible specctroscopy is used for quantitative determination of different samples.It is also deno...

Q: Please check image below. A. Primaquine PO4. How much Primaquine PO4 should be added to compound the...

A: For formulation of 1 tab, 30 mg of PO4 is required. No of tabs in a batch = 600,000

Q: Give the following information for the encircled element in the molecules as shown below 6) CH3CHCEN...

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Q: How many moles of Ge are there in a sample of Ge that contains 2.62×1024 atoms? moles

A: Given  Number of atom of Ge = 2.62 × 1024 atom  Number of mole of Ge =  ?

Q: Which of the following are true with regards to graphene? X) all carbons are sp2 hybridized Y) it ...

A: X) all carbons are sp2 hybridized This statement is Correct

Q: Which compounds are oxidizers and which are reducing agents? How do I go about solving this?

A: Redox reaction can be defined as the reaction in which oxidation and reduction both occur together. 

Q: Solvent extraction is based on the relative of two liquids. odor O texture O solubilities O color

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Q: In the first step of this process sodium bromide is dissolved in water. It is mentioned that not all...

A: Given data:  The solubility of NaBr = 0.9432 g/mL Mass of NaBr = 78 g Volume = 75 mL

Q: Calculate the molar solubility of molecular oxygen in water at 25oC. The Henry's law constant is 1.3...

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Q: Calculate the volume in mL  of the potassium dichromate stock solution that the chemist should pour...

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Q: Q1) A constant volume tank contain 1 mole of C,H14 and 12 mole of O2 gas at a temperature of 25 °C a...

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Q: Choose which waste disposal container you should dispose of the unused 0.1 M FeCl3 solution. A) acid...

A: In this question, we have to determine that which type of waste will FeCl3 makes, or we can say that...

Q: OH cat. Me H3C H;C HO CH3 wi

A: This reaction is a typical example of condensation reaction between two equivalents of carbonyl comp...

Q: 1. How many MOLES of xenon trioxide are present in 4.05 grams of this compound ? moles. 2. How many ...

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Q: NHCCES IV. CH3 V.

A: Electron donating groups on aromatic ring increases the rate of nitration.

Q: A compound is found to contain 26.96 % sulfur , 13.45 % oxygen , and 59.59 % chlorine by mass. To an...

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Q: A certain reaction has an equilibrium constant of 10.1 at 25°C AZ B What is its AG, in kJ/mol, if [A...

A: the solution is as follows:  

Q: Consider a free radical polymerization without chain transfer proceeding by head to tail addition on...

A: Initiators of Radical Chain Polymerization In a perfect world, the initiators ought to be moderately...

Q: Determine the type (I = ionic, M = molecular/covalent, binary acid = BA, oxyacid = OA) and name or g...

A: Covalent compound can be defined as the compound which is formed from the covalent bond, Covalent bo...

Q: The magnesium spectrum has a line at 266.8 nm. Which of these statement/s about this radiation is/ar...

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Q: Single Bonds Multiple Bonds H-H 432 N-H 391 149 c=C 614 H-F 565 N-N 160 |-CI 208 C=C 839 H-CI 175 49...

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Q: The formula for a Ciprofloxacin otic drop is given in the literature as follows: Cirpofloxacin 1 g P...

A: So, Ciprofloxacin is required = 20 g.

Q: Balance the following chemical reaction and determine the coefficients of H2O and AIK(OH)4, respecti...

A: Balance chemical equation: Balanced chemical equation can be defined as a reaction in which number o...

Q: When (CH3CH2)3CBr is added to CH3OH at room temperature, the major product is (CH3O)C(CH2CH3)3 and a...

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Q: How do structures of these IUPAC names look like? e) 2-Propoxy-1-(2-propoxyethoxy)propane

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Q: Use the graph below as reference: What is the boiling point of a solution of 50% toluene? Temperatu...

A: Answer is given below :

Q: Give the following information for the encircled element in the molecules as shown below 9) OH OH a)...

A: The Circled atom is a carbon atom.  And carbon have four valancy electrons. 

Q: Pure water freezes at 0oC. What is the freezing/melting point of an aqueous solution containing 37.4...

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Q: You are part of a group of pharmaceutical chemists who are currently characterizing potential lead c...

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Q: litrogen gas is used in place of CO2 gas for some bubbly beverages such as beer and coffee. low many...

A: We have to predict the amount of heat required.  

Q: 2.050 g of an unknown sample contains H, S, and O. If the compound contains 0.0500 g H and 0.800 g o...

A: Total weight of unknown sample = 2.050g  Mass of H = 0.0500g  Mass of S = 0.800g 

Q: Spontaneity

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Q: Determine of T/F. The ΔGo of a reaction is -5 kJ/mol at 25oC so the reaction is at equilibrium.

A: Given value of standard Gibbs free energy value is negative

Q: A chemist measures the enthalpy change AH during the following reaction: 2 Al(s) + Fe,O3(s)→Al,O3(s)...

A: Given, 2 Al(s) + Fe2O3(s) ➝ Al2O3(s) + 2 Fe(s)   ∆H = -852 kJ Calculating the values of ∆H for the f...

Q: How could you use 'H NMR to distinguish between the following pair of compounds? Explain your answer...

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Q: attempts left Chec Enter your answer in the provided box. Calculate the number of grams of Al in 461...

A: Number of moles is calculated by dividing  given mass with molecular mass. 

Q: Review I Constants I Eeriodi Table Part A MISSED THIST Wanch KCYT36 WE136 Read Section 136. You can ...

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Q: 4) Propose a pathway to synthesize 2-Methylpentane using:

A: The synthesis of 2-methylpentane can be done using Corey house synthesis as discussed below

Q: The following data were measured for the reaction OCl-(aq) + I-(aq) --->  OI-(aq)  +  Cl-(aq) Exper...

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Q: A 0.3606-g of a weak monoprotic was dissolved in water and then titrated with 0.1040 N KOH solution....

A:     Given - weak monoprotic           = 0.3606-g titrated with solutions   = 0.1040 N KOH  Total Vol...

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.