A molecule in which the central atom forms three single bonds and has one lone pair is said to have a ________ shape. A) bent B) linear C) planar D) pyramidal E) tetrahedral 8. A bond where the electrons are shared equally is called a(an) ________ bond. A) polar covalent B) coordinate covalent C) nonpolar covalent D) ionic E) none of the above 9. In a precipitation reaction the insoluble product can be identified by the symbol ________.
In the absence of other water molecules, you interact fine with butanol, but the attraction isn't strong. When more water is around, then your interaction with that is strong, and so the butanol is excluded. Do demo while describing Thus, it is not so much that non-polar compounds can't interact with water as much as that the interaction of water with other water molecules (hydrogen bonds) is much stronger. 15. Now explain why NaCl won't dissolve in hexane (a non-polar solvent) using a similar thought process.
List 3 some properties that all ionic compounds share. ________________________________________________________________ ________________________________________________________________ 7. List some differences between metals and salts. ________________________________________________________________ ________________________________________________________________ 8. Explain how metallic bonding gives metals their unique properties.
Products are being covered in marketing visuals claiming to make them appear greener however products that claim to be recyclable or better for the environment are actually regulated by federal regulations. Bio-plastics, bio-degradable plastics and compostable plastics must be tested to validate claims that they will biodegrade under the conditions that the company advertises. This memorandum serves as a concern geared towards the recent Riordan manufacturing company initiatives to towards going
Subatomic Particles and the periodic table 1. The three particles and their properties An atom has no overall charge. The protons (positively charged) and neutrons (no charge) make up the nucleus of an atom, and this is surrounded by negatively charged electrons. There are as many protons as electrons, so they balance each other out, creating a neutral relative charge on the atom. Neutrons, Protons and electrons are all sub-atomic particles.
The Case of Neurontin Juan Jesus Lopez RES/351 January 23, 2013 Edward Balian The Case of Neurontin “The goal of ethics in research is to ensure that no one is harmed or suffers adverse consequences from research activities.” (Cooper & Schindler, 2011). In the article of Neurontin written by Dr. Ramirez De Arellano, she discusses the unethical practice of, “selective outcome reporting”, conducted by pharmaceutical giants Pfizer and Parke-Davis. Neurontin, which is the brand name for gabapentin, is prescribed for the treatment of epilepsy. Some physicians prescribe Neurontin for, “off-label”, uses such as insomnia, migraines, bipolar disorder, and restless leg syndrome. In some cases off-label uses often exceed the intended use, which in turn becomes very profitable for the pharmaceutical manufacturer.
Distinguish between an element and a compound with 2 examples for each An element is a substance that cannot be broken down into any simpler substances. Some examples of Elements are Hydrogen and Helium. A Compound is when two or more elements combine. Examples of this are Water (H2O) and Salt (NaCl) Explain the relationship between the group number and the number of electrons in the valence shell The relationship between the group number and the numebr of
On the other hand, a SN2 reaction is a concerted, bimolecular reaction which has one slow, transition state1. Its dependence on the nucleophile requires that the nucleophile be electron rich so that it is able to attack and displace the leaving group. In addition, the reaction requires primary electrophiles and primary nucleophiles, which allow a backside attack to occur without causing steric hindrance4. The backside attack promotes inversion of the product. Alkyl
Unlike medications, supplement Dietary Supplements 3 makers do not have to prove their products are safe or effective. The FDA, however, can force a supplement from the market if it proves it is unsafe (nutrition.about.com, n.d.). Dietary supplements can be good for the body if there are substances lacking in the body. If a person has diseases, supplements can help control them. It is best to consult a doctor before taking supplements because they can interact with medications, causing bad reactions.
Food and Drug Administration (FDA) Reform Act of 2012 H.R. 5651” (Anonymous, 2012, p. 14) to protect the nation’s drug supply. The Act covers generic drug supply chains by inspecting all foreign and domestic drug production. This enactment should help to put generic drugs on the market sooner because manufacturers will pay application fees for faster drug approvals. Manufacturers of food, drugs, and other products regulated by the FDA are subject to recalls if a product harms consumers, or its effectiveness do not meet the claims