Which one of the following contains the most moles of hydrogen atoms? A) 5 mol of C₂H B) 10 mol CH₂OH C) 15 mol H₂ D) 7 mol C₂H₂

Q: How many molecules are in each sample? 69.0 g N2 (Express your answer using three significant…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: Calculate oxidation states and determine oxidizing and reducing agent. Cu (s) + 2AgNO3(aq) →…

A: in the given four reactions, we have to determine the oxidizing agent and reducing agent Also, we…

Q: beaker containing the sample was weighed using the analytical balance and obtained  a weight of…

A: Given -> Weight of (sample + beaker ) = 15.4 gm Weight of beaker = 9.4 gm

Q: MISSED THIS? Watch KCV 16.3; Read Section 16.3. You can click on the Review link to access the…

A: Concept based on the Brosted-Lowry acid-base theory.

Q: A copy of your chemistry textbook is found to have a mass of 2.52 x 10³ grams. Using unit analysis,…

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Q: Draw the Line Bond Structure for carbon tetrachloride (CC14) Step 1: Count the total number of…

A: Carbon tetrachloride, CCl4 molecule has 1 C atom and 4 Cl atoms.  Since C has a smaller…

Q: Calculate the wavelength of light (in nm) of light that has a frequency of 1.00 x 10¹5 Hz. 30.0 nm…

A: Given, Frequency (f) = 1.00 × 1015 Hz = 1.00 × 1015 s-1 Wavelength (λ) = ? nm Note:  Speed of light…

Q: Use the drop-down features to describe the mechanism of the given reaction. OH two The first step of…

A: Three membered rings formed by two carbon and one oxygen atom is known as epoxide ring. The…

Q: Complete the following operations and write your answer with the correct number of significant…

A: Significant figures rule for multiplication :  Round your answer to the least number of significant…

Q: Learning units: Hospitals need compressed oxygen cylinders. Suppose you are given the choice of…

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Q: When burned, a sample of an unknown substance is found to emit light of frequency…

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Q: 1 Drag items from the column on the right to the left to match the pairs Tetrodotoxin Cholera Toxin…

A: The question is related to the drugs and their mode of actions.

Q: Name the functional group shown in each molecule below. The first answer has been filled in for you.…

A: In this question given that four organic molecules, which has different functional groups. We have…

Q: 2.How many milliliters of 12.0 M HCI (aq) are required to prepare 250 milliliters of 1.0 M HCl(aq)?

A: Molarity is defined as number of moles of solute dissolved per litre of the solution. Given initial…

Q: How fast must an electron travel (in meters per second) to have the same wavelength as the diameter…

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Q: The molecular speed of gas is related to the speed of sound, as sound vibrations cannot travel…

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Q: 1. Fill in the electron configurations for the elements given in the table. Use the orbital filling…

A: hydrogen element have one electron and so electron figuration is 1s1. Helium element have two…

Q: the rate law for the reaction bewteen NO and O2 is   Rate = k[NO]3[O2] the  units of k are  M-1s-1…

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Q: Which experiment showed that wave-particle duality extends to particles like electrons? Double-slit…

A: Wave particle duality extends to particles like electrons means that electrons behave as particles…

Q: Crystals can have different shapes. Did the benzoic acid crystals form in needles (long and thin),…

A: Crystals of different compounds may have different shapes like cubic, hexagonal, rectangular etc.

Q: Three bottles of aqueous solutions are discovered in an abandoned lab. The solutions are green,…

A: [Cr(H2O)6]3+ is green in colour since H2O is weak ligand hence ∆° is small, [Cr(NH3)6]3+ is yellow…

Q: (1 points) Suppose the above solution is cooled to 0 °C. How many grams of A would precipitate from…

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Q: We are trying to determine the substitution pattern on an aromatic ring by looking at the region…

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Q: Show by writing a suitable series of equations how you could prepare each of the following compounds…

A: Since you have posted a question with multiple sub-parts, we will solve the first three questions…

Q: The nonvolatile, nonelectrolyte DDT, C14HgCls (354.5 g/mol), is soluble in diethyl ether,…

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Q: Br A B CI 2. List all the vibrational signals expected in the IR spectrum of the following compound…

A: Higher the strength of bond greater the stretching frequency.

Q: H₂C H H H H₂C CH₂CH3 X Br H CH₂CH3 CH3 H 2. Br. CH3 C=C F CI H and and and H₂C H H H₂C H Cl F Br CH3…

A: Isomers :- The compounds having same molecular formula but the structural arrangement of atoms or…

Q: Monarch butterflies migrate up to 2,500 miles from the US and Canada where they breed to forests in…

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Q: What is the ratio of molecules in the J = 9 rotational state relative to the J = 13 state at 500 K…

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Q: The temperature on a sample of pure X held at 3.8 atm and -230. °C is increased until the sample…

A: # Initial state (1st state): Temperature, T = - 230. oC + 273 = 43 K  Pressure, P = 3.8 atm  So the…

Q: O Macmillan Learning Identify the missing information for each neutral isotope. A Se atom has a mass…

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Q: How many sig figs should I have in 1.18 meters converted to inches

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Q: ОН CH3 PBr3

A: When PBr3 reacts with alcohol then it replaces OH group by Br atom . Following reverse…

Q: To prepare a standard solution of Cu²+ you obtain a piece of copper from a spool of wire. The…

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Q: Draw a Lewis structure for the molecule below, showing all H,NCH,CH,CH,CHO

A: Lewis structures is also called electron-dot structures or electron-dot diagrams. Lewis structures…

Q: 300 mg sample of an unknown substance (assume the van t'Hoff factor =1) was dissolved in 11.3 g of a…

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Q: 0 Which one of these compounds would give two signals between 60 and 85 in the proton NMR? O…

A: NMR is a branch of spectroscopy in which we deal with shielding and D shielding effect of proton In…

Q: Write the chemical formulas for the following ionic compounds. tantalum cyanide potassium iodide…

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Q: mole sample of ammonia at 14.0 atm and 25 °C in a cylinder fitted with a movable piston expands…

A: We know according to ideal gas equation PV = nRT  P is the pressure in atm  V is volume in L  n is…

Q: Name the functional group shown in each molecule below. The first answer has been filled in for you.…

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Q: H3C-C C-H + H₂O 1 M HNO3 H₂C=CH₂ OH H₂C-CH3 --Ch explain why the following reaction would not work…

A: HNO3 is a powerful oxidising agent so it oxidises alkenes to the carboxylic acid not to the ketone.

Q: Q-3) The boiling temperature of water TB at various alititudes h is given in the following table.…

A: #Q.3: The linear regression equation to be plotted is TB = m*h + b Comparing the above equation with…

Q: acid (MES) and 3-(N-morpholino)propanesulfonic acid (MOPS) are synthetic buffers used in…

A: #(a): The desired pH is 6.8  An acidic group is deprotonated at a pH greater than the pKa value.…

Q: Draw a resonance structure that places a pi bond in a different position. Include all lone pairs in…

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Q: Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first…

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A: We will do this question in two steps :  Theoretical Yield = First we will calculate the…

Q: What is the molarity of the methylene blue stock solution? (I dont know how to calculate it based on…

A: The stock solution is given in the "Materials" section which is 0.26% m/V Methylene blue solution…

Q: 3. Rank the following compounds in decreasing order of their reactivity toward the SN2 reaction with…

A: Given compounds: (a) methyl chloride (b) tert-butyl iodide (c) neopentyl bromide (d) isopropyl…

Q: 5. Solvolysis of bromomethylcyclopentane in methanol gives a complex product mixture of the…

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Q: A 0.1860 g rock sample containing an unknown amount of Ca was dissolved in HCI and diluted to 100.0…

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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.