Detailed answers & explanations would be great. If hand written please do not write in cursive for I have trouble reading it. 1. Using Lewis (electron-dot) structures, explain why the ClF3 molecule is polar and the BF3 molecule is not polar. 2. For the following questions refer to the following diatomic species. (A) Li2
We can draw an analogy between the attraction of an electron to a nucleus and seeing a lightbulb-in essence, the more nuclear charge the electron "sees," the greater the attraction. 1. Within this analogy, discuss how the shielding by core electrons is analogous to putting a frosted-glass lampshade between the lightbulb and you
1. What scientific principle or law is used in the process of balancing chemical equations? 2. In balancing equations, why should you not change subscripts in chemical formulas? 3. Define the terms limiting reactant and excess reactant. 4. Why are the amounts of products formed in a reaction determined only by the amount of
Question: Sort these species into isoelectronic groups. It doesn't matter which group goes in which box, so long as the correct species are grouped. He, Li+, O^2-, Rb+, Se^2-, F-, Be^2+, Y^3, Mg^2+ HINT: Use a periodic table to determine the atomic number of the atom. For example, xenon's atomic number is 54. A neut
Consider the Na atom. Although the ground state of Na atom has one and only one corresponding electron configuration, other electron configurations are certainly possible for Na atom; they correspond to higher-lying excited electronic states. The table below gives some of the possible electron configurations, term symbols, and e
I have attached two physical chemistry problems. The first deals with converting wavelengths to frequencies and the second deals with electrons being ejected. I am a little confuse on how to approach these problems. If you would include all work and a complete explanation it would be greatly appreciated. I will try to apply
Hello, I need assistance with the following question, would appreciate it if someone can help me. I have defined both terms, so i just require assistance with the calculation. Thank you Question: 1. The TLV for carbon monoxide is 35ppm. Define the terms TLV and ppm and calculate them for the following example:
Please help answer the following three questions. What are bonding theories? Why are they important? What may they be used for?
1) Which of the following phrases best describes the H—O bonds present in water (H2O)? A) nonpolar and covalent B) polar and ionic C) nonpolar and ionic D) polar and covalent E) none of the above 2) If the pressure of a gas sample is quadrupled and the absolute temperature is doubled, by what factor does the volu
calculate the first optical transition for 1,3,5,7 octatetraene using particle in a 1-D approximation?
1) What hybrid orbital would be expected for the central atom in each of the following: ? Draw the molecular structure of these compounds and label Ï? and Ï?bonds. A: SrCl2 B: NO2 C: COF2 D: GeCl4 E: PBr3 2) Draw the possible isomers of SO3 ). 4) Prepare 25 gm of 2.5% w/w NaCl solution 5) Prepare 50 ml of 13% alcoho
Carbon monoxide concentration in a car's exhaust is approximately 8% by volume when the car is idling (per the textbook). What is 8% in ppmv (by volume)? Answer A 800 B. 8,000 C. 80,000 D. 800,000
Every measurement has a measurement uncertainty. Discuss how precise and accurate measurement can be achieved in spite of the inherent measurement uncertainty. You could use the option given below. Take a ruler and measure the height of the textbook three times. Record the three measurements, and discuss the uncertainty in
1) Define a genetic mutation and state the types of genetic mutations. Discuss the effects of genetic mutations. 2) A thirteen-year-old girl, who is underdeveloped and thin, has a blood disorder. She frequently experiences chest and abdominal pain, fever, and coughing, and has trouble breathing. Her teachers often spend
The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance and shielding. Please show your work when answering the following questions: a. Using the inverse square law of radiation, what Geiger counter reading would you get for a radioactive m
How do you find correct significant figures when performing calculations? (note: the explanation will assume you know what significant figures are and can find how many sig figs are in each number) Perform these calculations, using correct sig figs (2.795m*3.10m)/6.48m 3.708 + 3.2 1.4567473*0.1
1. Calculate the pH at the equivalence point in a titration between 10.00 mL of acetic acid(0.100 mol/L) and sodium hydroxide (0.100 mol/L). 2. A reaction was carried out in an acidic medium. The equation for the reaction was given as Fe 3+(aq) + HSCN(aq) <----> FeSCN 2+(aq) + H+(aq). Write the equilibrium constant expressio
Please help with the 6 questions below. 1. The structural formula for ethanol, the alcohol in alcoholic beverages. Give the total number of: H H | | H -C - C - O - H | | H H (a) valence electrons, (b) single bonds, and (c) bonding pairs of electrons. How many extra pairs of electrons are le
Hello - I need some help! I need to track the nuclear decay of Thorium-232 by writing progressive nuclear decay equations until the last decay product is NOT radioactive. I also need to determine whether or not ANY of the isotopes in this decay sequence are usable in brachytherapy, and which would be best.
I have a list of terms that needs to be defined in a Physical Chemistry course. With each definition I need an example for each term, as a description to it or so term Chapter collision theory transition state theory rate constant Arrhenius equation integrated rate law rate law activation energy pseudo f
_____1) Which atom below has 4 valence electrons? a) Carbon b) Beryllium c) Hydrogen d) Nitrogen e) None _____2) What is the correct Lewis dot structure for oxygen? a) b) c) d) e) no right choice _____3) Which chemical has the most number of valence electrons in its Lewis structure (electron-dot structure)?
What is the chemical make-up of natural cleaners? How do these products compare to traditional cleaners? Are the active ingredients the same or different? How do the products differ from traditional cleaning products? Are these products safer or more environmentally friendly than traditional products?
1. Define a genetic mutation and state the types of genetic mutations. Discuss the effects of genetic mutations. 2. A thirteen-year-old girl, who is underdeveloped and thin, has a blood disorder. She frequently experiences chest and abdominal pain, fever, and coughing, and has trouble breathing. Her teachers often spend ad
An atom of tin (Sn) has a diameter of about 2.8 x 10 -8 cm. a. What is the radius of a tin atom. ? _________________Angstroms (A) and ________________m b. how many Sn atoms would have to be placed side by side to span a distance of 6.0 um? _________________________number os Sn atoms c
Please see the attached file for the fully formatted problems. In the real world, you do not have a program to balance equations for you. For questions 12-16 below, please fill in the first table below to indicate the initial numbers of reactant and product atoms. Balance the equation on your own and then fill in the second
I. Which of the following statements about the following reaction is correct? A + 2B arrow to right C + D2(2 is a subscript) a. A and B are reactants. b. C and D are reactants. c. A and B are products. d. all of the above 2. To find the molecular weight of a substance you should a. determine the number of atoms pres
1. Energy is ____ when an n = 4 to n = 2 transition occurs when an electron adds to the H+ ion and ends up in the n = 3 shell. a) destroyed, created b) emitted, created c) absorbed, emitted d) emitted, absorbed e) emitted, emitted 2. Calculate delta(E) if 1 = 1.40 kJ and w = -658 J. a) -657 kJ b) 0.742 kJ c) 1.4
Write the ionic and net ionic equations for the following reactions. a) AgNO3 (aq) + Na2SO4, (aq)-----> B). BaCl2 (aq) + ZnSO3 (aq)-------> C). (NH4)2CO3 (aq) + CaCl2 (aq)------>
Geometric Structure and Localized Bonding Models (also as attachment) 1. For each of the following chemical species: (i) write acceptable Lewis structures (including major resonance contributors and indicating formal charges); (ii) designate oxidation states for all atoms; and (iii) draw the stereochemical structures predi
How do you tell if a compound is ionic, polar covalent, or non-polar? Find out for these compounds (Big numbers are used to represent the number of atoms because they are all 1 molecule.) a) Na2SO4 b)KOH c)(NH4)2SO d) C6H14 e)C2H5OH f)H20