Ask Question, Ask an Expert


Ask Chemistry Expert

problem 1:

a) Compute the radius of the second and third orbits in He+ ion. As well compute the energy of the electron in the second and third orbits of He+ ion.

b) Compute the wave number (m-1) and energy (kJ mol)-1 of the light of wavelength 800 nm.

problem 2:

a) prepare down the values of four quantum numbers for 4s and 4p electrons.

b) Compute the de Broglie wavelength related with a body of mass 1.5 kg moving with a velocity of 100 m s-1

problem 3:

a) Arrive at the Lewis structures of ICI+2 and ICI-2 ions. By using VSEPR theory, predict the shapes of such compounds.

b) Compute the bond lengths in bromoethane and bromoethylene by using covalent radii values. For hydrogen, suppose that the covalent radius in 28 pm in such compounds.

problem 4:

a) Describe the structure of BF3 molecule based on hybridization concept. What is its shape?

b) Starting from Lewis structures, find out the hybridization type of the central atoms in IF+4 and ICI4.

problem 5:

a) State the definitions of bonding, antibonding and nonbonding orbital. Draw the molecular orbital obtained by the linear combination of two 1s orbital.

b) By using the molecular orbital theory, describe why the oxygen-to-oxygen bond is stronger in oxygen molecule than in peroxide (O22-) ion.

problem 6:

a) The element X forms a compound, XOCl3, in which X and O form a double bond while the X and Cl form single bonds. Recognize X from the given elements:

i) Al ii) Si iii) P (iv) S.

Give reason for your answer. Predict the shape of the molecule.

b) You are given a gaseous substance. Recommend an experimental method to determine whether it is polar or nonpolar. Describe the steps to be used in this method.

problem 7:

a) The bond length of Hl molecule is 163 pm. Compute its:

i) Moment of inertia and
ii) Rotational constant.

b) What is the essential condition for a molecule to be microwave active? Give three illustrations each for the diatomic molecules.

i) Having microwave activity and
ii) Not having microwave activity.

problem 8:

a) find out the ratio fo the fundamental frequencies of Hl and Dl.

b) Based on Beer-Lambert law, describe the method of finding out the concentration of a given solution of potassium dichromate. You are as well provided with a standard solution of potassium dichromate.

problem 9:

a) The rate constant for the radioactive disintegration of 6027Co is 0.1317 year-1. Compute the mass of 6027Co that will remain after 21.04 years out of 1 gram sample.

b) Describe the principle of finding out the age of organic materials by using radioactive dating method.

Chemistry, Academics

  • Category:- Chemistry
  • Reference No.:- M92539
  • Price:- $70

Priced at Now at $70, Verified Solution

Have any Question? 

Related Questions in Chemistry

How many seconds will be required to produce 10 g of

How many seconds will be required to produce 1.0 g of chromium metal by the electrolysis of a Cr(NO3)3 solution using a current of 3.0 A? Could someone please help me with the work for this.

Ionic compoundswriting assignment ionic compounds in

Ionic Compounds Writing Assignment: Ionic Compounds in Action A national chemistry council has selected you to create marketing materials for its new "Chemistry All Around Us" campaign. Your task is to increase public aw ...

You are provided with 200ml of 05moll-1 hydrochloric acid

You are provided with 200ml of 0.5molL-1 hydrochloric acid in which has been dissolved in a small quantity of anhydrous sodium carbonate. When titrated, 25ml of this solution requires 20.5ml of 0.5molL-1 sodium hydroxide ...

Question 1decide why the heat from a candle flame is barely

Question 1 Decide why the heat from a candle flame is barely tolerable when a person places his or her hand above the candle compared to when the hand is placed next to the candle. The highest temperature is at the tip o ...

Using the following data calculate the pressure of 100mol

Using the following data, calculate the pressure of 1.00mol of Ar(g) in a 40.0L container at 25 degrees Celcius using both the ideal gas equation and the real gas equation. Why are these two values so different? (aAr=136 ...

Aim - to understand the fundamentals of atomic structure

Aim - To understand the fundamentals of atomic structure, chemical bonding, periodic tableandits application in engineering problems - Objective - Observing and explaining the reasons of engineering chemistry related pro ...

Imagine you are performing a calorimetry experiment using a

Imagine you are performing a calorimetry experiment using a constant-pressure calorimeter. First, you calibrate the calorimeter using the reaction of KOH with HCl (enthalpy = -56.2 kJ/mol). Then, you use the calorimeter ...

Question 1di-lithium is composed of two lithium atoms which

Question 1 Di-lithium is composed of two lithium atoms. Which of the following statements regarding di-lithium or lithium is FALSE? They oxidize very slowly in air. They remain in the solid state even after getting fragm ...

How many grams of silver nitrate are required to produce

How many grams of silver nitrate are required to produce 44.00 g of aluminum nitrate? 6AgNO 3   +  Al 2 (SO 4 ) 3   →  3Ag 2 SO 4   +  2Al(NO 3 ) 3

Subject chemistry amp physics please answer all questions

(Subject: Chemistry & Physics) Please answer all questions. Please be clear. Short answers are fine. 3-4 sentences. 1) If a feather and a lead ball are dropped from 1000m in AIR (vacuum) , will they hit the ground at the ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro