62.6×13

Q: A bond order of zero indicates that a species is unstable. Using MO diagrams, determine which of the...

A: We have to find the species whose bond order is zero.

Q: Run 2: Initial grams of NaHCO, 4.292 Theoretical yield (grams) of Na20: Percent yield (Run 2) =

A: The given decomposition reaction is: 2NaHCO3(s)  ----> Na2O(s) + 2CO2(g) + H2O(l)

Q: (1) The element with an electron configuration of 1s²2s22p°3s 3p°4s²3d is in group and period (2) Th...

A: Given :- 1) electron configuration : 1s22s22p63s23p64s23d3  2) electron configuration :1s22s22p6  To...

Q: balance this chemical reaction     NaHCO3   +     CaH4P2O8 →  Na2HPO4   +    Ca5P3O13H +  H2O + C...

A:

Q: nistry: Alkyl halides only

A:

Q: Two different proteins X and Y are dissolved in aqueous solution at 37 °C. The proteins bind in a 1:...

A: the balanced equation is  X (aq) + Y (aq) <--------> XY (aq) The equilibrium constant is  KC=[...

Q: titrimetric profile of lysine

A: Rough diagram 

Q: Exercise 2: In an experiment, 1.50 dm' of 0.30 mol dm NaCl were mixed with 2.50 dm of a 0.70 mol dm ...

A:

Q: Cu + 4HNO3 ——->Cu(NO3)2 + 2NO2 + 2H2O

A:

Q: CH3 Br2 H2 a) b) Pd 1) BH3 H 2) H,O¬/NaOH 1) Hg(OAc),/H,O B 2) NaBH4

A: As alkenes have unsaturation and this unsaturated bond is quite labile, a number of reactions of alk...

Q: pH at end point 1 and pH at end point 2 are numerically smaller than 7.

A: First option is correct. pHat end point 1 and pH at end point 2 are numerically smaller than 7 .

Q: A 0.392 g sample of a monoprotic acid is dissolved in water and titrated with 0.120 M KOH. What is t...

A: We have to calculate the molar mass of acid.  

Q: In an experiment, 95.0 mL of 0.225 M silver nitrate was mixed rapidly with 47.5 mL of 0.225 M calciu...

A: No of m moles of Ag+ = M*V= 95*0.225=21.375 mmol No. of m moles of Cl- = M*V= 47.5*0.225*2=21.375mmo...

Q: A system releases 75 J of heat. And the same time 19 J of work is done on the system by the surround...

A: The formula foe finding Internal energy is, ∆U=q+w where ∆U is the change in internal energy, q is t...

Q: 7. Does CHCI; have a dipole moment? If so show the orientation of the dipole. 8. Based on what you l...

A: 1: The basic concepts that we must know about are polar and non polar groups.  2: Polar: Having high...

Q: Question 1     As a salt dissolves, the ions are surrounded by water molecules. This is referred to...

A: The correct options are:  

Q: what volume of 8.61 M stock solution of H2S04 is required to prepare 500.0 ml of a 1.75 M H2S04 solu...

A:

Q: With a specific example. Explain the electrophilic aromatic Substitution rxn.

A: The word electrophile means electron loving. Since the aromatic ring is rich in electron then the ch...

Q: Consider the following system at equilibrium where H° = 10.4 kJ, and Kc = 1.80×10-2, at 698 K. 2HI(g...

A: To study the affect of change in concentration , we would use Le-Chatlier's Principles .

Q: Boyle's, Charle's, Combined Gas or Avogadro's.  Then solve and show your work.

A: Pressure

Q: A certain gas held at a temperature of 31.2 °C holds a volume of 458 mL. If the temperature is chang...

A: Given data: Initial temperature (T1) = 31.2 °C Initial volume (V1) = 458 ml Final temperature (T2) =...

Q: Which of the following glycosidic linkage is found in maltose? a. Glucose (α1 – 2β) Fructose b. Glu...

A: Maltose is disaccharide.   

Q: Calculate the pH when 62.0 mL of 0.250 M HCI is mixed with 40.0 mL of 0.150 M Ca(OH)2.

A: Given that : The volume of HCl = 62.0 mL The molarity of HCl = 0.250 M The volume of Ca(OH)2 = 40.0 ...

Q: Which of the following is true? Reduction occurs at the cathode and oxidation occurs at the cathode....

A: Cathode is negative  electrode which attracts cation and anode is positive electrode which attracts ...

Q: balance this chemical reaction ___________Fe +__________O2 → __________Fe2O3

A: Given reaction is, ___________Fe +__________O2 → __________Fe2O3

Q: Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution conta...

A: Given is, Saturated solution contains 539 g NaOH per litre. So, Mass of NaOH = 539 g Volume of solut...

Q: From the Lewis structures of the species given, pick all of those in which the central atom obeys th...

A: Octet rule: According to octet rule any element that surrounds eight electrons is stable.

Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of ...

A: according to the ideal gas equation, the product of pressure and volume is equal to the product of n...

Q: 3. If3.4 moles of gas are contained in a volume of 2.25 L, what is the new volume if 1.8 moles are a...

A:

Q: Fill in the orbital energy diagram for the nitrogen atom. 2p E 2s 1s

A:

Q: 3. Draw the Newman projections of the three possible staggered conformations of 2,3-dimethylbutane, ...

A: Newman projection

Q: What is the maximum number of electrons possible with n = 3 in an atom? Submit Answer Retry Entire G...

A: Given  number of shell ( n ) or Principle quantum number  =  3  Maximum number of electron = ?

Q: What type(s) of intermolecular forces are expected between CH3CH,CONH, molecules? H H Indicate with ...

A: In order to explain the stability and also to examine different properties of a compound, different ...

Q: Calculate the pH of the solution after the addition of cach of the given amounts of 0.0559 M HNO, to...

A: Since you have asked a question with multiple subparts, we will answer only first three subparts for...

Q: Identify the fatty acids present in the following structure (e.g., stearic, oleic, palmitoleic). Do ...

A:  Stearic fatty acid  Arachidonic fatty acid  Oleic fatty acid   

Q: The photoelectric effect can be used in engineering designs for practical applications. For example,...

A: Energy is related to wavelength by the relationship: E = hcλ                                        ...

Q: Draw the structures of the carbonyl compound and the amine that will react at pH 5 to yield the prod...

A: Reaction between carbonyl compound and amine , imine compound is formed as a product. During the rea...

Q: Draw the major product of the following reactions and include stereochemistry in products. PBR3 pyri...

A:  Note: According to our guidelines we are supposed to answer only first three subpart.  Kindly repos...

Q: What type of intermolecular forces must be overcome in converting each of the following from a liqui...

A: Intermolecular forces refer to the type of interactions which are present in between atoms or molecu...

Q: 3. A student combines a solution of aqueous sodium phosphate with a solution of calcium nitrate. Wri...

A: A student added sodium sulfate and calcium nitrate.  

Q: The total pressure in a 11.2-L automobile tire is 32.0 psi at 25.0°C. What is the new pressure in th...

A: Given :  initial pressure = 32.0 psi  initial volume = 11.2 L  initial temperature = 25.0°C  final v...

Q: Aluminum metal plus aqueous zinc chloride Total Ionic Equation: Net Ionic Equation:

A: To solve this problem we have to first write the balanced molecular equation then we will write the ...

Q: 17.6 cm3 of a pure vapour, at 1.153 atm, and 98.5 °C has a mass of 0.0520 g. Calculate the molar mas...

A: Given :-  pressure = 1.153 atm  Volume = 17.6 cm3  Temperature = 98.5°C  mass = 0.0520 g  To calcula...

Q: A model for SiH4 is shown in the chem3D window. SIH4 has tetrahedral geometry. ball & stick labels R...

A: Given ball and stick model of SiH4 is : a). How many atoms are bonded to the central atom = ?  b). ...

Q: Using the mass of sodium bicarbonate used for runs 1 and 2, calculate the theoretical yield of solid...

A:

Q: How many moles of ethylene glycol must be dissolved in 500 g of water (Kf= 1.86 °C m-1) to lower the...

A:

Q: Calculate the pH of 0.50 M sodium acetate, CH3COONa. Ka(CH3COOH) = 1.8 x 10-5 5.72 11.48 2.52 4....

A: Given;

Q: Arrange the following sets of ions in order of decreasing ionic radii. (a) Br, Cl-, 0², s²- (b) Cs+,...

A: The solution is given below - 

Q: explain why the ionic radius of cation are less than with its atomic radius and the ionic radius of ...

A: Concept is based on Ionic radius and size of the atom.

Q: How many 5d orbitals are there in an atom? What is the maximum number of electrons possible in a set...

A: We denote orbitals by quantum numbers. 5d orbital denotes that principal quantum number, n = 5 and t...

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.