A hydrocarbon (a compound that contains carbon and hydrogen only) contains 82.8% carbon and its Relative Molecular Mass is 58. Calculate both its empirical and molecular formulae.

Q: (2) Consider the reaction: 5Br (aq) + Bro laq) + 6H*(aq) → 3Bra(aq) + 3H20(1). The average rate of…

A: 5Br-(aq) + BrO3-(aq) +6H+(aq) --> 3Br2(aq) + 3H2O(l) -∆[Br-]/∆t.  = 1.5 × 10-4 M/s

Q: 39. Which of the following should not be included in the equilibrium constant expression the…

A: Given following equilibrium reaction -  NH3(aq) + H2O(l)  <----> NH4+(aq) + OH-(aq)  When  we…

Q: From the experimental data, a student determines that the hydroxide ion and calcium ion…

A: Here we are required to find the solubility product of calcium hydroxide

Q: Which of the following solutions is basic? Select one: a. [H+] = 1.0 x (10)exp-7 M b. [H+] < 1.0 x…

A: For a solution to be basic, it should have a higher concentration of OH- in comparison to [H+] i.e…

Q: 4) Please consider the following galvanic cell setup: the cell is composed of a silver rod dipped…

A: A redox reaction can be explained as a chemical reaction in which the oxidation process (loss of…

Q: Use the References to access important values if needed for this question. Solid potassium sulfite…

A: Here solid K2SO3 is added slowly to 150 ml 0.109 M  of Ca(NO3)2 until the concentration of sulfite…

Q: How is the molar mass of 2-methyl-2-hexanol is different from the M+1 peak of the mass spectrum?

A: Oxygen has three isotopes i.e. O16, O17, O18 In 2-methyl-2-hexanol, O16 is a commonly found isotope.…

Q: MISSED THIS? Read Section 20.6 (Pages 917 - 922) . Part A An electrochemical cell is based on the…

A:

Q: For the formation of C¿H;OH(1) AF2°C -41,770 cal. Find AF at 25°C %3D for the reaction 2 C(s) + 3…

A: Free energy of the reaction is given by   ∆F =∆F° + RTlnQ Where Q = Reaction Quotient   And  Q =…

Q: Calcium carbonate is used as an antacid to relieve heartbum, acid indigestion, and upset stomach.…

A: Given data Mass of CaCO3 taken = 6.088 g Mass of HCl reacted = 2.852 g Reaction; CaCO3 + 2 HCl →…

Q: After performing Part A of the experiment, a student obtained the following concentrations for…

A: Trial                            Concentration of sodium hydroxide NaOH   1…

Q: 8. Diborane (B:Hs) is a compound used to fuel rockets. The equation for the combustion of this…

A:

Q: How many electrons are transferred in the following reaction? . 8 OH 8) 2

A: In the given reaction, 2 MnO4- + 3 S2- + 4H2O → 3S + 2 MnO2 + 8 OH-

Q: A phase diagram for elemental carbon is shown below. How many triple points are present? 10 Diamond…

A: -&gt;Triple point is point in phase diagram at which tree phases are in equilibrium.That is three…

Q: Calculate the mean, standard deviation, coefficient of variation given the following data Initial…

A: mean= (30.95+ 0.05+ 30.95+ 0.05) ÷2 = 30.95 ml+ 0.05ml = 31.0ml Standard deviation= (31.0-30.95)2…

Q: 7. 3.0g of impure anhydrous sodium carbonate was dissolved in water to make 250cm3 of solution.…

A: Answer: This question is based on stoichiometric calculation where we have to convert moles of HCl…

Q: A voltaic cell is constructed in which the following cell reaction occurs. The half-cell…

A: Explanation :            An electrochemical cell is made up of two electrodes separated with a…

Q: A piece of unknown metal weighs 217 g. When the metal piece absorbs 1.43 kJ of heat, its temperature…

A: Here we are required to find the specific heat capacity of unknown metal and also identify the metal…

Q: Write the reaction Cons tant quoticnt ,ac , equi librium follo wing and the KC, for each the…

A: Recall the given reaction,                   2 Na s  +  2 H2O l  →  2 NaOH aq  +  H2 gWe have to…

Q: Which reagent is limiting?

A:

Q: Which of the following reactions is an example of heterolytic bond breaking? CH 3 CH 3 a. CH3 CH 3…

A:

Q: What is the typical molecular structures of an epoxy resin and curing agent?

A: In the given problem we have discuss about the typical structure of Epoxy resins and also its curing…

Q: 1) What is the different between volumetric titration and condumetric titration?

A: 1)  Both volumetric and conductometric method are qualitative methods to determine the…

Q: +12 →1+ Cr +le

A: Answer:  in basic medium , in which side oxygen is present we are add same number of water molecule…

Q: Q2: Liquid water at 20°C flows straight up 30 m. 1- How much power pump is needed if the mass flow…

A: Power = Work / Time Also, Work = Mass * g * Height g = 10 m/s2

Q: 1. Heat pentanal with KOH 2. Add but-2- enal 3. HCI

A: Since we know that enolate ion is soft nucleophile so it gives 1,4 addition reaction ( Micheal…

Q: 7. Na2Cr207 HO, H2SO4 8. Но HIO4 OH

A: #7: H2CrO4(Na2CrO4+H2SO4) is a strong oxidizing agent and oxidizes primary alcohol to acid and…

Q: Calculate the probability of finding an electron in a 1s orbital outside the Bohr orbit (ao).

A: We have to calculate the probability of finding an electron in a 1s orbital outside the Bohr orbit…

Q: Determine the molar mass of an unknown compound i

A:

Q: Analyze the following energy diagrams of infer which process is likely to be more product-favored:…

A:

Q: In a voltaic cell, one compartment/electrode is a Ag*(0.600 M) | Ag(s) half-cell, the other is a…

A: Answer: In the Voltaic cell through the redox reaction chemical energy gets converted into…

Q: QUESTION 1 The electron configuration 1s2s2p64s'3d corresponds to which element? Write the symbol…

A: Write the name of the  element of the given confuguration and calculate unpsured electron in Co+ ?

Q: Calculate the solubility (in moles per liter) of Al(ОН)з ( Kp = 2 x 10-32) in each of the following.…

A: Given:: Ksp of Al(OH)3= 2×10-32  Calculate solubility in different solvent = ?

Q: Rank the compounds from lowest pka (most acidic) to highest pka (least acidic). HO OH HO HO II II IV…

A:

Q: Determination of Ionization Constant of Acetic Acid by Conductivity Measurements 1.Why is there a…

A: 1) To limit the likelihood of inaccuracy, the final solution's conductivity must be corrected. Air…

Q: 04e:- give the IUPAC Name ? |

A:

Q: Use Le Châtelier's principle to predict whether the solubility of BaF2 will increase, decrease, or…

A: Adding Ba(NO3) 2 will decrease the dissociation of Barium flouride due to common ion effect    The…

Q: Classify each species as covalent molecular, covalent network, ionic, or metallic.

A:

Q: Draw the resonance structures by hybrid orbitals. NH2 NH2

A:

Q: ORANGE II SYNTHESIS Describe the recrystallization process of the Orange II dye in 95% ethanol.…

A: Once we get the solid crude of the orange II dye. We need to recrystallise it in order to remove the…

Q: 2.2. Find the enthalpy change for the reaction CS2(1) + 3 02(g) → CO2(g) + 2 SO2(g)

A:

Q: A phase diagram for CO, is shown below. At room temperature and very high pressure (>1500 atm), CO,…

A: (A) SOLID .

Q: What is Ecell for a galvanic cell represented by the combination of the following half-reactions? E=…

A: Correct option is 1.66 V .

Q: Sold potassium sulfite is slowly added to 150 mL of a 0.109 M calcium nitrate solution until the…

A: Answer: When Potassium sulfite is slowly added to Calcium nitrate solution, then precipitate of…

Q: + Ca Mg + Ca2 - 2Fe"(aq) - Ni(s)+ 2Fc"(aq) BK' Au + 3K CH- Cu+ + H2

A: Chemical reaction which has positive cell potential will occur Spontaneous.  According to…

Q: Please answer #1 and #4

A: 1: We have to tell among the given structures, which one is more acidic. Structure 5 is the most…

Q: Synthesis of Orange II dye.

A: Orange II Synthesis a. Cool 10 mL of 10% NaOH in a 400 mL beaker. Add 1.8 g of 2-naphthol to this…

Q: If the solubility of silver in solution of AgCl is 0.000013 molar. The solubility product of AgCl…

A:

Q: (1) Identify each of the following half-reactions as either an oxidation half-reaction or a…

A:

Q: ns: Au (aq) + 3e Au(s) E = +1.50 V Cd2*(aq) + 2e Cd(s) E =-0.40 V is being oxidized. is being…

A: Answer:  1) Cd is being oxidised . Because oxidation state of CD is increased. 2) Au3+ is being…

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.