A chemist prepares a solution of potassium iodide (KI) by measuring out 175. μmol of potassium iodide into a 200. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's potassium iodide solution. Round your answer to 3 significant digits. mmol L 1.9

Q: 1. 2. Rank the following compounds, A-E, from lowest solubility in hexane, CH₂(CH₂)4CH3, to highest…

A: Solubility : "Like dissolves like" is the thumb rule for dissolution of solute in solvent. This…

Q: How many exact numbers are present in the following set of data? 20 K, 20 coins, 20 kg, and 20…

A: Measurements have three parts to them: Numeric Value, Unit and uncertainty. There are two types of…

Q: States of matter are distinct forms that different phases of matter take on. How many physical state…

A: Solution - There are 4 states of matter -  solid  liquid  gas  plasma  when the molecule are packed…

Q: A gas was found to have a pressure of 714.9 torr. What is the pressure in atm? Selected Answer:…

A:

Q: If the KP for the reaction CO(g) + H2O(g) ⇌ CO2(g) + H2(g) was calculated to be 3.32 × 103 at 298.15…

A: According to the question, The balanced chemical reaction is as follows, CO(g) + H2O(g) ⇌ CO2(g) +…

Q: 11.3 Which nucleophile in each pair is more reactive? (CH3) 3P or (CH3) 3N (a) (b)

A: Nucleophile reactivity depends on the availability of electron to donate.

Q: When the hydroxyether below (A) is heated with a catalytic amount of acid, it rapidly forms a…

A:

Q: What is [H+] in a solution prepared by mixing the following solutions 2.0 L of 1.9 M HCl 1.4 L of…

A:

Q: Magnesium metal is placed in a solution of a zinc sulfate. A reaction occurs to produce zinc metal…

A: Given :  magnesium metal is placed in solution of zinc sulfate.

Q: How many kJ of energy is produced* during the formation of 43.4 g of Fe, according to the reaction…

A:

Q: I don't understand why there's a carbon in the middle of NH2

A: To answer: why there's a carbon in the middle of NH2

Q: How can we indicate the concentration?

A: Answer: This question is based on Le-chatalier's principle which suggests that on changing any…

Q: Calculate the amount of heat required to raise the temperature of a 72g sample of water from 34 ∘C…

A: Amount of heat,Q required to raise the temperature of a substance of mass ,m and specific heat…

Q: 14. Bromine is often used as a laboratory spot test for unsaturation in an aliphatic hydrocarbon.…

A: The molecular formula of the given compound is C6H6  Vial A decolorize Bromine and Vial B did not…

Q: Alkanes with Substituents Sort each of the molecules shown into the bin with the appropriate IUPAC…

A: We can name organic compounds by their structure.  We need to find the substituents, functional…

Q: Arrange the given bent molecules in order of decreasing dipole moment. H₂O H₂S H₂ Se H₂ Te Largest…

A: A dipole moment is the measure of the strength and direction of a molecule's electric dipole. It is…

Q: 2. The following figures are examples of two DNA bases. DNA has a double-stranded structure that…

A:

Q: a. For the following unbalanced equation, calculate how many moles of the second reactant would be…

A: The balanced chemical reaction of cobalt and fluorine is as follows: 2Cos + 3F2g  →  2CoF3g The…

Q: Using the average atomic masses, calculate how many moles of each substance the following mas a.…

A: mass of Si = 4.60 g mass of AuCl3 =2.60 mg = 0.00260 g mass of S = 1.95 kg = 1950 g

Q: Which of the hydrocarbons in the following group are isomers? Select all that apply.

A: Hydrocarbons are the compounds composed of carbon.and hydrogen atoms. There are mainly four types of…

Q: Draw the reactants that would react to form this cyclohexene derivative in a Diels-Alder reaction.…

A: Diels elder reaction:- Diels elder reaction is a reaction between diene and dinophile. •General…

Q: A weather balloon is inflated with helium (He) gas to a volume of 7932 mL at an ambient temperature…

A:

Q: 6. Draw stepwise mechanisms for the reactions below. Use appropriate curved arrows to show all bonds…

A:

Q: Nitric acid is a strong acid, and phosphoric acid is a weak acid. This means that... The PKA of…

A: We have been given a statement that nitric acid is a strong acid and phosphoric acid is a weak…

Q: Question 3: Concentration of CO is 100 ppby. Express this concentration as (a) µg/m³ and (b) percent…

A: General formula for conversion of ppb(v) to microgram per m3 µgm3 = ppb×12.187×M  (273.15 + °C)…

Q: nough of a monoprotic acid is dissolved in water to produce a 1.60 M solution. The pH of the…

A:

Q: If a particular liquid has a normal boiling point of 338.0 K and a vapor pressure of 75.0 mmHg at…

A: Given, Note: vapour pressure at normal boiling point = 1 atm Vapour pressure (P): P1 = 1 atm = 760.0…

Q: b Make HO CI OH Br ... From Be 8 **** 8

A: We have find out starting materials, reagents, and conditions that will produce each product.  Note…

Q: Draw and name the product in each of the following reactions: a. Cyclopentene + H₂O (H*) b.…

A: Reactions involve the addition type reactions. Reactant molecule contains C=C bond which react with…

Q: Given six molecules, identify the molecules with polar bonds and the molecules that are polar. a)…

A: The bonds between the atoms having electronegativity difference are known as polar bonds. The…

Q: Liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water .…

A: Given  Mass of hexane= 16.4 g mass of oxygen = 25.0 g to find mass of carbon dioxide =?

Q: The initial volume of a gas sample is 6.8 L at a pressure of 780 millibar. What pressure (in bar)…

A: Given: Initial volume, V1 = 6.8 L Initial pressure, P1= 780 millibar *(1 bar / 1000 millibar) = 0.78…

Q: For the following unbalanced equation, calculate how many grams of each product would be produced by…

A: Well, first of all, we have to balance the reaction. and using the mole ratio one can calculate the…

Q: In the laboratory, a general chemistry student measured the pH of a 0.392 M aqueous solution of…

A: Given that  pH = 4.920 Concentration = 0.392 M  We have to find out the experiment Ka

Q: 11.1 Which substrate would be least reactive in an SN2 reaction? (a) x (b) x (c)

A: SN2 reactions are concerted i.e. they are a one step process. The bond-making between the…

Q: In the laboratory, a general chemistry student measured the pH of a 0.392 M aqueous solution of…

A:

Q: 14) Predict the approximate chemical shift of the shaded protons in the following compounds a. C6H6…

A: The molecules given are  a. C6H6  b. CH3COCH3 c. CH3OCH2CH3 d. CH3CH2CHO e. C6H5COOH f. CH3CH2Br

Q: How many moles of Sn are there in 77.1 grams of Sn ? moles

A: The moles of Sn = 0.650 mol

Q: Explain why bromination is more selective than chlorination in replacing the 3o hydrogen. Use…

A: In the given problem we need to discuss the selectivity of bromination than chlorination in…

Q: Draw the molecular ion (M) for this molecule formed in the mass spectrometer.

A: Mass spectrometry is an important tool for the determination of the molecular mass of the compound…

Q: When 1.045 g of CaO is added to 50.0 mL of water at 25.0 ∘C in a calorimeter, the temperature of the…

A:

Q: a. Calculate the number of moles in 21.7 mg of nitrogen dioxide. mol b. Calculate the number of…

A: Answer: For any given sample of a certain mass of a compound, its number of moles will always be…

Q: A solution of methylamine (CH³NH₂), a weak base, has an initial concentration of 0.477 M.…

A:

Q: On average, water flows over a particular water fall at a rate of 2.03 x 105 cubic feet per second.…

A: Given that ,  Rate of a water fall is 2.03 × 105 cubic feet / sec  1 cubic feet water = 62.4 lb  1…

Q: Consider the following equilibrium: 3 A(g) = B(g). A flask is charged with 1.00 atm of pure A(g).…

A: •Given:-                                  3A    ==>.   B         Initial:-         1atm.…

Q: For the following reaction, give the balanced equation for the reaction. PBr3 (1) + 3H₂O(1) →…

A: Answer: Balancing of chemical equation depends upon the law of conservation of mass which suggests…

Q: Macmillan Learning Write the equilibrium-constant, Kp, expression for the reaction A(g) + 3 B(1) 2…

A: Chemical equilibrium is a state at which both reactant and product bare in equilibrium with each…

Q: 1. Rank the indicated hydrogen atoms in order of increasing ease of abstraction in a radical…

A: Radical Halogenation Reaction Radical halogenation is a type of organic reaction in which a halogen…

Q: ↓ 1. How many types of proton environment? 2. Show the (n+1) effect on splitting pattern 3. Do you…

A: 1H NMR spectroscopy is used to determine the arrangement of Hydrogen atoms in the molecule.

Q: What is the value for x in the equation below? e(1.24x) = 412.8(9.07+9.21)

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.