4. Which pair could be used to demonstrate the law of multiple proportions? O A. CuCl2 and CuCl O B. MgS and MgCl O C. KF and CaF2 O D. NaCl and KCI

Q: For the following reaction, 28.4 grams of calcium hydroxide are allowed to react with 24.8 grams of…

A: Given: Mass of Ca(OH)2 taken = 28.4 g. Mass of HCl take = 24.8 g. And the reaction taking place is…

Q: The fizz produced when an Alka-Seltzer tablet is dissolved in water is due to the reaction between…

A: Given, 3NaHCO3(aq) + H3C6H5O7(aq) ➝ 3CO2(g) + 3H2O(l) + Na3C6H5O7(aq) moles of Sodium bicarbonate…

Q: For the following reaction, 0.128 moles of potassium hydroxide are mixed with0.158 moles of…

A:

Q: Calculate the pH of a 0.74 M solution of NaOH.

A:

Q: Give a specific example of hydration of alkenes including the starting material (substrate) and the…

A: Protonation of alkene by acid  Attack of water as nucleophile  Deprotonation leading to the…

Q: provides information about the spontaneity of a reaction/process; and <<Question 20 of 32 provides…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: 3. Draw the tripeptide described by Phe-Trp-Cys. Your drawing can be condensed structural formula,…

A: Amino acids contain carboxylic acid and an amine functional group on the same carbon atom. Amino…

Q: The reaction NO (g) + 03 (g) = NO2 (g) + O2 (g) reaches equilibrium at 310 K. Some of the NO2 gas is…

A: In the given equilibrium, we removed the NO2 gas from the reaction chamber.

Q: Mercury(II) oxide decomposes to form mercury and oxygen, like this: 2 HgO(s)→2 Hg(1)+ O₂(g) At a…

A:

Q: The structure of a new antihistamine drug that is structurally related to fexofenadine is attached.…

A:

Q: A solution that contains a weak acid and its conjugate base in roughly equal concentrations is A.…

A:

Q: How much water can you extract from 1.00 L of 0.35 M solution of sugar at 40 C by exerting a…

A: First of all we will calculate the moles. Concentration = mole ÷ volume

Q: A reaction vessel is charged with only 0.616 atm of NO, 0.616 atm of H20 and 0.307 atm of H2 gases.…

A:

Q: Using the thermodynamic information provided, what is the entropy change, AS for the balanced…

A: Calculate change in the entropy of the given reaction ---

Q: Which indicator could be used to titrate aqueous NH3 with HCI solution? Indicator Acid Range Color…

A: we have to find which indicator can be used

Q: CH₂CH=CH₂ NBS, H₂O DMSO OH orosle CH3CHCH₂Br

A: 1. The reaction proceeds through the formation of cyclic bromonium ion. 2. The nucleophilic attack…

Q: A student reacts benzene, C6H6, with bromine, Br2, to prepare bromobenzene, C6H5Br, and HBr. C6H6 +…

A:

Q: ol, what is AG for the following reaction?

A:

Q: For a reaction with the rate law below: Rate = k O a plot of log [A]o/[A] vs. 1/time gives a…

A: Given rate law, rate = k Rate is independent of concentration.

Q: Calculate the volume of N₂ gas in L if 1.79 g of N₂ at 28.0°C have a pressure of 507.0 Torr. (R =…

A: First we will convert mass into moles of nitrogen. Than we will calculate the volume of gas using…

Q: The chemical environment of protons can be deduced from their chemical shifts. What are the relative…

A: 1H-NMR spectroscopy is mainly used for to complete identification of the structure of unknown…

Q: 1H,2H, and 3H are examples of because they have different numbers of

A: No.of protons = atomic number  Number of neutrons = mass no. - atomic number   Mass number = protons…

Q: 10. How would you carry out the synthesis of MDMA from safrole? NH₂ ~- safrole Molly HN

A: This is an example of electrophilic addition  reaction followed by substitution reaction . and…

Q: sopper(II) chloride, what a Cl2 is produced at the cathode Cl2 is produced at the anode Co is…

A: Electrolysis of CuCl2 gives, It has Cu2+ cation and Cl- anion.  Cation moves toward cathode and…

Q: A2.50 L flask is filled with 5.00 g of iodine (la) and 5.00 g of fluorine (F₂) at a temperature of…

A: Given: The mass of I2 = 5.00 g The mass of F2 = 5.00 g Volume  = 2.50 L Temperature = 378 K We have…

Q: Complete the following table. Equilibrium roaction Koq expression H2(g) + C12(g) = 2 HCI(g) Fe3O4(s)…

A: The equilibrium constant, Kc is the ratio of the concentrations of products divided by the…

Q: What are the values for standard temperature and pressure (STP) in units of °C and mm Hg? °C and mm…

A: Given : We have to tell the temperature and pressure at STP.

Q: Suppose that the total mass of the reactants in a chemical reaction was 100.00000 g. How many…

A: Given that, the mass of the reactants is mR = 100.000 g. The mass of the products is mP = 99.999 g.…

Q: Determine the equilibrium constant at 255 K for the following reaction under acidic conditions. 4H+…

A: We can calculate equilibrium constant by using equation ∆G°= -R T lnK Where  ∆G°= Gibbs free energy…

Q: Given the following equation: N₂ (g) + 3 H₂ (g) → 2 NH3 (g) How many moles of NH3 are produced if 11…

A: Detail mathematical calculation is shown below

Q: How many millimoles of solute are contained in a) 250.0 mL of 0.0423 M KSCN? b) 500.0 mL of a…

A: Given Multiple question here.

Q: What is the organic product formed in the following sequence of reactions? Br (1) Mg/ether, (2) CO₂…

A: The three step synthesis is shown in the following step.

Q: [3] (b) Formulate the criteria of spontaneity at constant volume and pressure by using the Helmholtz…

A:

Q: Example Weigh of bottle with Na₂C₂04, g Weight minus Na₂C₂04.9 Weight of Na₂C₂O4 taken, g Final…

A: The balanced equation for the reaction of C2O42-(aq) and MnO4-(aq) is: 5C2O42-(aq) + 2MnO4-(aq) +…

Q: Which of the following is necessarily true for a galvanic cell with the following reaction?…

A: We will checking the following options for suitable answer. This question is from Electrochemistry…

Q: Under standard conditions, a positive value of AG for a reaction indicates that: the reaction favors…

A: For a reaction to be spontaneous the standard change in Gibbs free energy of reaction is less than…

Q: Which of the following equations describes the ionization of a weak acid? (1) HCIO3(aq) + H₂O()→…

A: We have to tell among the given equations, which of the following equations describe the ionisation…

Q: L Select the statement that is true for the following balanced redox reaction: 3 Zn2+ + 2NO+ 4 H₂O →…

A: In this question we have to tell that which statement is true for the balanced redox reaction.

Q: In the Brønsted-Lowry definition of acids and bases, an acid O A. is a proton donor. O B. is a…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: Chemistry A 30.0 mL sample of 0.100 M HN3 (hydrazoic acid) is titrated with 0.150 M NaOH. Calculate…

A: Molarity of HN3 = 0.100 M volume of HN3 = 30.0 mL Molairty of NaOH = 0.150 M Ka of acid = 1.9 x 10-5…

Q: Draw the structure of the starting material in this hydration experiment.

A: This experiment is synthesis of hexan-1-ol by hydration of hex-1-ene.

Q: Calculate the mole fraction of He in a mixture of He and N2 that contains 4.25 g of He and 29.5 g of…

A:

Q: Calculate Eᵒcell (in V) and indicate whether the overall reaction shown is spontaneous or…

A: Given data : 2Cr3+(aq) + 3Mg(s) -------&gt; 2Cr(s) + 3Mg2+(aq)  E0cell = ?

Q: grams of carbon dioxide

A:

Q: The redox reaction below has a AG value of 219. kJ. Determine the standard cell potential (Eᵒcell)…

A:

Q: Name the following complex ions. formula [V(CN)]* [Co (CN),] [Crc14] name

A: Name the following complex ions---

Q: Calculate the volume of N₂ gas in L if 1.79 g of N₂ at 28.0°C have a pressure of 507.0 Torr. (R =…

A:

Q: + e → Cu+ (aq) +2e → Sn²+ (aq) + 2e → Pb(s) + 2e → Ni (s) + 2e- → Co(s) ) + 2e → Cd(s) -) + 2e → →…

A: From the given electrochemical series,  Cathode is Pb electrode and Ag is anode E°cell = E°c - E°a

Q: WHAT DOES THIS READ?!?!?!?! 12 14 15 METHODS ⒸHILL MY NOILS LABDALA SIR LABELS PANE & Collecting hyd…

A: Given: a scale dipped in a water To tell: what does the scale read?

Q: When mixed in equal molar amounts, which of the following pairs of substances would create a buffer?…

A: Buffer solutions are of two types .  1.) Acidic buffer : This buffer is made my mixing a weak acid…

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.