Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Chemistry Questions: 1. A triangular planar molecule will have ______ unshared pair(s) of electrons on the central atom. a. 0 b. 1 c. 2 d. 3 e. 4 2. The correctly drawn Lewis formula for NH2OH will have ______. a. 3 single bonds and 3 pairs of nonbonding electrons b. 4 single bonds and 3 pairs of nonbonding electrons c. 3 single bonds, 1 double bond, and 2 pairs of nonbonding electrons d. 2 single bonds, 2 double bonds, and 2 pairs of nonbonding electrons e. 4 single bonds and 2 pairs of nonbonding electrons 3.When there are extra electrons available in a Lewis structure they: A. are used to make double bonds in the molecule. B. are used to make triple bonds in the molecule. C. become nonbonding pairs of electrons. D. are the most reactive electrons. E. don't affect the molecular geometry. 4.Which of these molecules or ions has a violation of the octet rule (other than H)? A. BCl3 B. F2 C. PH3 D. NO3‾ E. SF2 5.Which of these molecules or ions has a violation of the octet rule (other than H)? A. C2H4 B. NH3 C. SO2 D. MgBr2 E. Cl2 6.Which of these molecules or ions has a violation of the octet rule (other than H)? A. CO B. H2O C. PCl5 D. Br2 E. NH3
what is the lowest concentration that can be measured with your spectrophotometer? For compound Y, which absorbs much more light at the same wavelength (a molar absorptivity of 30,000), what is the lowest concentration that can be measured?
Calculate the concentration given the absorbance. Each test tube has 5ml of water then a certain amount of bromol blue. 1 ul bromol blue absorbs at= 0.092, 2 ul=0.105, 4ul=0.093, 10=0.199, 20= .225, 30= 0.592, 50=0.957, 100= 1.717.
Organic Chem: A hexose A was obtained after (-) glyceraldehyde underwent three successive Killani-Fischer syntheses. Oxidation of A with nitric acid forms an optically inactive aldaric acid B. Wohl degradation of A followed by nitric oxidation giv..
Ammonia is produced by the reaction of hydrogen and nitrogen N2(g)+3H2(g)--->2NH3(g). a) How many moles of H2 are needed to react with 1.0 mol of N2? b) How many moles of N2 reacted if 0.60 mol of NH3 is produced?
Environmental magazine about the success of global initiatives in solving environmental concerns, using the Montreal Protocol and ozone depletion as a focus.
Determine symmetry types for all normal modes of vibration for NH3, which has trigonal pyramidal geometry C3v. Use the internal coordinates analysis method
compare the number of valence electrons in an atom of oxygen, O , with the number of valence electrons in an atom of selenium in the same period or group.
Calculate the approximate molarity of this solution from the volume, percent composition, and density.
1. sulphur iv oxide reacts with oxygen to form sulphur vi oxide.nbspa explain why we cant assume that the pressure and
the enthalpy of vaporization of ethanol i 43.5 kj/mole at its normal boiling point of 352 k. using avalue of the molar heat capacity of liquid ethanol of 111.46 j/k/mol
Determine the pH of the acid solution before the titration begins and the pH at the equivalence point when 50.0 mL of the NaOH has been added. The Ka of HF is 7.2*10^-4
What is the H+ concentration of an aqueous solution with a pOH= 4.38 at 25 degrees celcius.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd