How many moles are in 6.3 g of calcium chloride, CaCl₂? 18 mols 110 mols 0.057 mols 7.0 x 10² mols

Q: Q8

A: Sulphuric acid formula H2SO4 . sulphuric acid contains  Sulphur  hydrogen and oxygen  element.

Q: Gallium consists of 60. % 69Ga and 40. % 71Ga. Arsenic has only one naturally occurring isotope.…

A: Gallium has two isotopes 69Ga and 71Ga  with ratio of abundant 60 % and 40 % . Therefore intensity…

Q: How do you know if a solution is a strong or weak solution when looking at the percent dissociation?

A: Dissociation is the conversion of a compound in its ions by a suitable solvent. Acid dissociates in…

Q: 1-In (Cathodic protection system) sacrificial anode, which is more voltage than the metal to be…

A: The Anode is negative or reducing electrode that releases electrons and oxidizes during and…

Q: (11.4, 11.7)In the Lewis structure of the molecule XY4, all X and Y bonds are single bonds and…

A: From the VSEPER theory we can tell the geometry of the complex.

Q: Given the active site drawn below, what would you expect to happen to the acidity of the K residue?…

A: The active site of the given compound contains positively charged amine and a carboxylic acid. It is…

Q: The Solubility Product Constant for lead fluoride is 3.7 × 10-8. The maximum amount of lead fluoride…

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Q: Q16

A: We know that  Moles = weight ÷ molar mass

Q: Given the following reactions and associated equilibrium constants, determine K3 in terms of K₁ and…

A: When a reaction is reversed then its equilibrium constant is reciprocated.  When a reaction is…

Q: The Brønsted-Lowry definition of acids and bases is: Acids are proton donors, bases are proton…

A: Choose the correct option for Bronsted-Lowry definition of acid and bases is ?

Q: In the chemical equation below, in the direction in which it is written, which is the oxidizing…

A: Electrochemistry is branch of chemistry in which we deal with redox reaction occur in cell.

Q: Which gas will have the greatest rate of effusion (velocity)? O SF4 O SO₂ O CO₂ O Xe

A: -> rate of effusion of gas is inversely proportional to square root of molar mass. -> It means…

Q: E. Rank the following molecules in decreasing activation (from most activated =1 to most deactivated…

A: The groups which activates the benzene ring should have +M effect or that can donates the electron…

Q: For the following reaction, 62.5 grams of silver nitrate are allowed to react with 27.9 grams of…

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Q: You have a solution that contains acetic acid, (CH3COOH or HAc). The concentration of acetic acid in…

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Q: The pH of a solution is 3.10. What is the OH- concentration in the solution?

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Q: A molecule or ion that donates the hydrogen in a hydrogen bond is a hydrogen bond donor A molecule…

A: An intermolecular force (IMF) known as a hydrogen bond is created when an electronegative atom with…

Q: free energy. kJ/mol 5 20 15 10 O 10 kJ/mol O 5 kJ/mol O 15 kJ/mol reaction coordinate O more…

A: Activation energy is the minimum amount of energy which reacting species must possess in order to…

Q: A solution was prepared by dissolving 3.50 g of KCI MgCl₂ 6H₂0 (277.85 g/mol) in sufficient water to…

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Q: A mixture of butene, C4Hs, and butane, C4H10, is burned in air to give CO₂ and water. Suppose you…

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

Q: Why is there objection in the use of Hydrogen Sulfide in group cations?

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Q: Calculate the heat of reaction AH for the following reaction: 2 HBr(9) H₂(g) + Br₂(9) You can find a…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: The aluminum in a 0.767 g sample of an unknown material was precipitated as aluminum hydroxide,…

A: given: mass of sample of unknown material =0.767 g mass of aluminium oxide produced = 0.143 g…

Q: Convert 23.5 g of gold (Au) to number of moles

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Q: For the following molecules, draw the structure for the fragment that you would expect to be the…

A: The highest intensity peak in mass spectra is known as base peak.  Base peak is the result of the…

Q: A material has a specific heat of 0.625 J/g°C.  A 75.6 g sample of this material is heated  and them…

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Q: Add three hydrogen atoms to each appropriate carbon. Draw Select /M C H O More Erase O

A: The valency of carbon is four and hence it can form maximum four bonds The valency of hydrogen is…

Q: 3. Rank the following substances in order of increasing boiling points: H₂O, Br2, KCl, HCl HCl < Br2…

A: 3. Boiling point is the temperature at which the vapour pressure of the liquid becomes equal to the…

Q: Metalloproteases can contain a catalytic triad made up o O D(H₂O)D E(Ln*)S None of the choices are…

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Q: A balloon is filled with 3.00L of helium at a pressure of 765 torr. What is the volume of the…

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Q: Chemistry A molecular compound has the formula, C6H10. Enter the name of the compound. -Not…

A: The chemical formula C6H10 is in the form of CnH2n-2, where n = 6 CnH2n-2, is the general formula of…

Q: Good explanation Asap Thanks In a cell, the extracellular (outside) concentrations of Sodium…

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Q: Use one of the following values: If 1.05 mol of an ideal gas at 274 K has a volume of 203 L, what…

A: Given, number of moles (n) = 1.05 mol Temperature (T) = 274 K Volume (V) = 203 L Pressure (P) = ?…

Q: What is the oxidation number of phosphorus in H3PO4? O-3 O +3 O +5 O +4

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Q: A sample of water with a mass of 38.50 grams absorbs 2.950 kJ of heat energy. if the initial…

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Q: (9.4) Which of the following elements has the most number of valence electrons? selenium antimony O…

A: The number of electrons present in the outer most shell of an atom is known as valence shell…

Q: Please provide your answer to two decimal places and show your work. Hischierite (Hh) has a molar…

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Q: (11.7) Identify the number of sigma bonds and pi bonds in a triple bond. O 1 sigma, 2 pi O2 sigma, 1…

A: If there is a single bond between two atom then it is Sigma bond. If there is double bond between…

Q: What is the product of the following reaction? OCH, OCH, OH OH CH OH, Hº OCH, OH 11 А) 1 B) II С)…

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Q: AgCl forms a strong electrolyte in an aqueous solution. O True O False

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Q: I need help with this

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Q: If we have 9 Calcium, 9 Chlorine, 10 Magnesium and 3 Lithium ions in a box, what will be the value…

A: Solution a) +41 b) -9 c) +32

Q: Consider the reaction Fe₂O3(s) + 2Al(s) Al2O3(s) + 2Fe(s) for which AH = -851.5 kJ and AS° = -37.00…

A: Given , Reaction : Fe2O3(s) +2Al(s)→Al2O3(s) +2Fe(s) ∆H°=-851.5 kJ∆S°=-37.00JKTemperature, T =…

Q: 1. When a liquid becomes a solid does it expand or contract? 2.Predict why it is hard to elevate…

A: The compounds in the liquid phase have no fixed shape, however, the compound in the solid form has a…

Q: 2) a) Propose a detailed mechanism to explain the following overall transformation. Please redraw…

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Q: ((11.4) Consider the molecule below. Determine the molecular geometry at each of the labelled atoms.…

A: Presence of Lone pair(LP) over central atom affects the shape of the molecule.

Q: the the indicator of chemical change are

A: Chemical  change occurs When there are formation of new products .

Q: NH₂ NH₂ OH NH3 NaⓇ Products A Products C Choose the correct neutralization products for the amino…

A: 1) If the alkyl chain R is water-repellent then we called the amino acids as hydrophobic.

Q: Cr₂O72+ H+ +1 → Cr+³ + 1₂ + H₂O 12 What is the oxidation no. Grin Cr₂0-²2 Choose...

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Q: PC13(g) + Cl₂(g) → PCI5(0) Bond CI-CI P-CI O-662 kJ mol1 O-67 kJ mol 1 O-905 kJ mol O-243 kJ mol 1…

A: Given, PCl3(g) + Cl2(g) ➝ PCl5(l) ∆Hrxn = ? Note: PCl3 : 3 P-Cl bond Cl2 : 1 Cl-Cl bond PCl5 : 5…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.