Chemistry chapter 6.3 1) a. Cation b. Electrostatic forces 2) Ionic bond between metal and oxygen, the metals conduct electricity in a solid state using delocalised electrons. They are coated with a special kind of plastic e.g. Copper. 3) When they contain 8 valance electrons. 4) When naming an ionic compound, which ion is given first?
What is the charge of the ions formed by group 7A elements? A) +1 B) +7 C) – 1 D) – 7 Page 2 7. Which element has a variable charge? A) Mg B) Mn C) Al D) Ag E) More than one of the above elements can have a variable charge. 8.
Predict the number of valence electrons for a sulfur atom. a. 4 b. 6 c. 8 d. 16 e. 32 58. Predict the number of valence electrons for a chlorine atom.
| 2.3.5 Practice: Proteins Enzymes and Water | Practice Assignment | | | | | Biology (S1808013) | Aleasha King | | | Points possible: 25 | Date: ____________ | | 1. a) Carbon has six protons, six neutrons, and six electrons. Oxygen has eight protons, eight neutrons, and eight electrons. Draw each of these atoms. (1 point) HINT: Think about the smaller numbers in each element as the number of electrons and the larger as the number of protons and neutrons. b) Circle or highlight the six most common elements found in living things.
Describe two recent discoveries of transuranic elements explaining how they were produced. Firstly what is a transuranic element? Transuranic elements are elements with an atomic number above that of uranium with atomic number Z= 92. All transuranic elements are radioactive. The process of changing one element into another is called transmutation.
pyridinium hydrobromide perbromide type of stationary phase column length column temperature rate flow of the carrier gas List the 4 general factors that affect the separation obtained on a gas chromatograph What specific technique is used to collect/isolate your purified unknown compound at the end of the recrystallization experiment? suction filtration 14 of 22 4/16/12 9:15 PM StudyBlue Flashcard Printing of Lab Final 2211L UGA
The distance between the forces is given by the Coulombs law through the use of the formula F=kq1q2/r2.0.1newtons = 8.99*109*3.2*10-6*7.7*10-7/r2 R= 555.78 Answer to question 3 • Potential difference between the two plates is equal to velocity which is equal to 6.0*106m/s • Force = mass *acceleration = 1.4*10-13*6.0*106 = -8254 nektons The speed of the particles are computed by the formula V=ED. This is equal to 8.5*10-6*0.15. This is equal to 84.1 Answer to question 4 Voltage = current *resistance. This implies that in this case while V is 5.0 and resistance is 1.0*103, current will be equal to 5/1.0*103, = 500 amps B the direction of the conventional current provides the electric charge movement from the positive side of the battery to its negative side as in indicated in the diagram below Answer to question 5 • This section focuses on the equivalent resistance of a circuit. The equivalent resistance will be equal to (5.0*102+1.00*103)2.
Physics: Principles and Applications, 6e Giancoli Chapter 17: Electric Potential Conceptual Questions 1) Which of the following is not a vector? A) electric force B) electric field C) electric potential D) electric line of force Answer: C Diff: 1 Type: MC Var: 1 Page Ref: Sec. 17.1-17.8 2) One joule per coulomb is a A) newton. B) volt. C) electron-volt.
This enantiomer was then isolated in order to be characterized. A polarimeter was used to measure the specific optical rotation, confirming the presence of a specific enantiomer. Experimental Procedures Name | Nickel(II) chloride 6-hydrate | 1,10-phenanthroline-H20 | dl-tris(1,10-phenanthroline) nickel(II) chloride | State | Solid | Solid | Solid | MW | 237.7 g/mol | 198.22 g/mol | 667.87 g/mol | Mass | 0.12 | 0.60 g | Predicted: .1705 g | mmol | 0.51 | 3.03 | Predicted: 0.51 | Equiv. | 1 | 3 | | Denstiy | 3.55 g/mL | 1.10 g/mol | | Volume | N/A | N/A | | Source | SigmaAldrich | SigmaAldrich | SigmaAldrich | Hazards | Avoid ingestion, inhalation, skin + eye contact | Eye, skin, and respiratory irritant | | dl-tris(1,10-phenanthroline) nickel(II) chloride: A sample of NiCl2-6H2O (0.12 g, 0.51 mmol) was weighed out and dissolved in 8 mL of D.I. H2O.
m) How many optical phonon branches does a crystal with 4 atoms per unit cell have? n) What are the names of the two (Austrian and the American) scientists who laid the foundations of statistical thermodynamics 1 Problem 2 - Basic thermodynamics [30 points]. Provide a short explanation possibly with equation or illustrating graph if necessary: a) State and explain the equipartition theorem and its relation to a system’s degrees of freedom. b) Sketch the experimental setup for the Brownian motion experiment shown in class and discuss the result and