Q17. Which of the following reactions is an oxidation-reduction reaction? A. 2Na+ 2H₂O- 2NaOH + H₂ C. H₂S + Ca(OH)2 - 1 CaS + 2H₂O Q18. The electron geometry and hybridization of BrO3¹ respectively are? A. Trigonal planer, sp² C. Trigonal pyramidal, sp³ B. Trigonal planer, sp³ D. Tetrahedral, sp³ Q19. Determine the empirical formula of a compound contains 28 g N (14.0 g/mol) and 80 g 0916.0 g/mol)? B. N₂O3 A. NO C. N₂O5 D. N₂O4 Q20. Elements with the lowest atomic size values are found in the -------- corner of the periodic table A. Lower left B. Upper right C. lower right D. Upper left Q21. Which sequence below represents the proper order of decreasing bond order? triple > double single > triple A. single double > triple C. triple double > single Q22. The hybridization of iodine in ICl3 is A. sp² B. sp³ A. Pauli exclusion principle C. Building up principle B. Na₂S +CaCl2 CaS + 2NaCl D. NH4OH + HBr → NH4Br + H₂O 2s 个 C sp'd 10-8- Q23. When you complete the Lewis structure for the molecule: This molecule has ----- single bonds ----- and ----- triple bonds. A. 3, 8, 1 C. 8, 3, 1 D. 2, 10, 2 B. 3, 8, 2 Q24. Calculate the number of moles of Fe that are produced when 0.20 mol of Al2O3 is produced in the following reaction. 2Al(s) + 3FeO(s)→3Fe(s) + Al2O3(s) B. 0.40 mol D. 0.60 mol C. 0.30 mol A. 0.20 mol Q25: The SO3²- ion has how many total valence electrons? A. 24 B. 26 Q26. The following electron configuration violates ↑↓ B. single D. double C. 32 D. sp³d² 2p T D. 36 ↑↓ B. Hund's rule D. Does not violate any rule

Q: 140 120 100 80 PPM 60 40 20

A:

Q: G L00 400 3000 1000 HaVENUER H L00 3000 2008 1000 HAVENUNEERI TERNSHITTANCEI

A: Spectroscopic analysis is very useful in structural elucidation of organic compounds. IR…

Q: Conversion : 1 kg steam = ..... kcal 1 kg steam = ..... cal 1 kg steam = ..... kw Please guide…

A:

Q: 13. The speed of a particular automobile is 45 mph (miles per hour). Use the following relationships…

A: In this question we have to convert the unit of speed.

Q: The following item is used in chemistry laboratory. It is called as a glass rod with bulb. Select…

A: The Given chemical labarotary equipment is

Q: velocity

A:

Q: A physical chemist measures the temperature T inside a vacuum chamber. Here is the result. T=-42.6…

A: T(K) = 230.4 K

Q: 04 on OH OH

A:

Q: Statements Highlight your answer, a. Nonmetals always lose electrons during the ionic bonding…

A: Chemical reactions are those reactions which undergo any chemical change. Chemical reaction is…

Q: What is the pH of the titrated solution at the equivalence point? (use Kb, and and ICE table)

A: AT equivalence point,  moles of acid = moles of base added. Substituting given values, the volume…

Q: hjjkhjk

A: Kindly write or post proper statement of question.

Q: 1. For the reaction below: a. b. Predict the products and show the mechanism using curved arrows.…

A: To predict the products and show mechanism using curved arrows.

Q: 2ev HHO H2S04 H HO leg + 2 ea O LDA/-78°C

A: Aldol condensation:Aldehyde or a ketone under basic or acidic conditions forms β-hydroxy aldehyde or…

Q: 95. Calculate the volume of a rectangular box with the dimensions 42.6 cm by 4.41 cm by 1.932 cm.…

A: Given data, Dimensions of rectangular box= 42.6cm, 4.41cm, 1.932cm.  Density of mercury = 13.63 g/mL

Q: 12+5029 x 5280+21

A: The given problem can be solved using the BODMAS rule. In this rule, we need to operate in the order…

Q: Calculate the density Density C d= 5.40g 2.00cm² Since

A:

Q: - The prefix giga is used in the metric system has a value of 1016 A 1019 10+12

A: A metric system is a measurement unit system that uses meter, liter, gram to measure the length,…

Q: Fill in all empty spaces. (Round the answers to one decimal place)

A: P1(kPa)P2(kPa)V1(L)V2(L)T1(K)T2(K)Name of Lawconstantconstant0.450.43298285Charles…

Q: Volume would o.0595 n temperature (25°C)

A: Consider pressure is 1atm Use ideal gas equation to get all answers  1) 1.47L 2) 1.37L 3) 1.24L

Q: 16.1 cm2 converted to km2

A:

Q: At what temperature (in K) does uranium hexafluoride have a density of 0.5820 g/L at 0.5073 atm? 1

A:

Q: Solve for the variables below. a. 769.17× 10 – 7.6917 S p= b. 881.73× 10-4 = j j=

A:

Q: How many grams of iron metal can be formed by the reaction of 2.14 gAI metal with excess Fe,O3,…

A:

Q: 4. C3H5NO a peaks S total peaks 1 1:3 200 180 160 140 120 100 80 60 40 12 11 10 6. 8. 3 2. ppm…

A: M. F C8H5NO

Q: Convert 75°F to K

A: The temperature is given in the Fahrenheit unit and it is 75oF. The temperature in K is =?

Q: I 4000 3000 100 aVENJERI J 4300 3000 2008 1000 HVENUNERl

A: The given spectrum can be analyzed as follows:

Q: .1. For the overall reaction UO,* + 3 Pt3* + 8 H,0 → U* + 3 Pt5* + 16 OH- .1a. write the half…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: What is unit of coefficient of friction? a. No unit b. Watt с. Кg d. Newton

A: The coefficient of friction has no unit .

Q: In the Cytochrome P450-catalyzed mono-oxygenation cycle shown below, which transition results in a…

A: The given reaction is cytochrome P-450 Catalyzed mono oxygenation cycle.

Q: 3x < 3 or 4x + 6 < -3 and write the solution in 4 Solve interval notation.

A:

Q: 20g H2O to molecules= round answer to 2 decimal places

A: First calculate the number of moles for water molecule. Convert that calculated moles to the number…

Q: 3.9 X 1014 sec = years

A:

Q: Systematic error causes the mean of a data set to differ from the accepted value. True…

A: The objective of measurement can be qualitative or quantitative. Every measurement has an inherent…

Q: Draw the starting structure that would lead to the following two products under these conditions.…

A: Ozonolysis is the process where an alkene is converted into carbonyl compound.

Q: F to C

A:

Q: Temperature is a macroscopic measurement of a microscopic phenomenon Group of answer choices True…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: H. T H H H H H H mary (17), secondary (27), or Tertiary (3"). Answer Bank 3

A:

Q: B CI Br

A: Given that, the reaction schemes are shown below We have to give the correct reagents for the above…

Q: Н Н H Н 0. н-с H H

A: In the given question we have to do the following reaction,  the reaction is hydration of alkene,

Q: 100 O 92 O 92.05 O 90 O 92.1 Submit Request Answer 10 70

A: Comparing temperature scale to mercury raised.

Q: fou make a 0.018 M aqueous solution of ammonia (NH3). Remember that ammonia is the conjugate base of…

A: To write mass balance and charge balance equation for a solution of ammonia in water.

Q: 4. Determine the pre-exponential factor A from the intercept of your graph.

A: From previous solved question we have to just compare the equations to get pre exponential factor A

Formal Charges

Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.

Polarity Of Water

In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent. 

Valence Bond Theory Vbt

Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.