Sodium + Water --> Sodium hydroxide + Hydrogen Ans: 2Na (s) + 2H2O (liq) → 2NaOH (aq) + H2 (g). Q.3. Write a balanced chemical equation with state symbols for the following chemical reactions: (i) Solution of barium chloride and sodium sulphate in water to give insoluble barium sulphate and the solution of sodium chloride. Ans:- (i) BaCl2 (aq) + Na2SO4 (aq) →BaSO4 (s) + 2NaCl (aq) (ii) Sodium hydroxide solution (in water) react with hydrochloric acid solution (in water) to produce sodium
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eating disorders include binge eating disorder and eating disorder not otherwise specified. Bulimia nervosa is a disorder characterized by binge eating and purging. Purging can include self-induce vomiting‚ over-exercising‚ and the usage of diuretics‚ enemas‚ and laxatives. Anorexia nervosa is characterized by extreme food restriction to the point of self-starvation and excessive weight loss.[2] Though primarily thought of as affecting females (an estimated 5–10 million being affected in the U.K.)‚ eating
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Introduction Botulism is a serious but rare infection that is caused by a bacterial poison (toxin). It usually affects babies who are 6 months of age or younger. What are the causes? This condition is caused by a toxin that is produced by the Clostridium botulinum bacteria. The toxin develops when a baby swallows (ingests) these bacteria‚ which then settle in the gut and grow. These bacteria often come from dust and soil. What increases the risk? This condition is more likely to develop in infants
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In addition to being responsible for taking scientific measures focused around new and existing animal species; Lewis was also responsible for the botany discoveries on the journey. Botany‚ flora and fauna were Lewis’s original interest and love. Over two hundred and sixty specimens were collected and investigated along the journey. As with the animal findings‚ some were sent ahead to scientists even before the journey ended‚ so examination and scrutiny could begin. These specimens were analyzed
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plate. d. checking the name tag. d. checking the name tag. 5. A client is on a bowel and bladder training program and has not had a bowel movement in three days. The nurse aide should a. report it to the charge nurse. b. give the client an enema. c. offer the client prune juice. d. encourage the client to drink more fluids. a. report it to the charge nurse. 6. The proper medical abbreviation for before meals is a. p.c. b. b.i.d. c. a.c. d. t.i.d. c. a.c. 7. A client diagnosed
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(See teacher background information in Flame Tests‚ Atomic Spectra and Applications Activity) Introduction: Have you ever seen a fireworks display? Where do all of the colors come from? Below are some links to the chemistry of fireworks: http://chemistry.about.com/od/fireworkspyrotechnics/Fireworks_Pyrotechnics.htm http://alchemy.chem.uwm.edu/amalgamator/NCW/ncw2001/fireworks.html In this activity‚ you will investigate the colors of flame produced by solutions of metal
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9.5 Tests for halogens and halide Ions Test for halogen Test method Test observations Test chemistry and comments Chlorine gas Cl2 A pungent green gas. (i) Apply damp blue litmus. (Can use red litmus and just see bleaching effect.) (ii) A drop silver nitrate on the end of a glass rod into the gas. (i) litmus turns red and then is bleached white. (ii) White precipitate. (i) Non-metal‚ is acid in aqueous solution and a powerful oxidising agent (ii) It forms a small amount of chloride ion in water
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colors of different spectrums hydrogen for example shows 4 colors …etc Materials: 1- Benson burner 2- A wire loop ( wake sure it ’s clean ) 3- 4 filter papers 4- 4 Unknown test solid as directed by instructor (potassium ‚ sodium ‚ calcium ‚ barium / chloride ) 5- A beaker 6- diluted HCL ( to clean the wire loop with it ) 7- A spatula
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is the mass in kilograms of a beaker that weighs 101 grams? 16. Convert 12 g(cm2/s2 to Joules (kg(m2/s2) 17. A 1.013 g sample of a hydrate‚ ZnSO4 ( X H2O is dissolved in pure water and the sulfate ion is precipitated by adding an excess of barium chloride solution. The mass
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wavelengths of light are present if colors are blended. List the metallic elements (excluding the unknowns) used in the flame tests in order of increasing energy of light emitted. Strontium Chloride Calcium Chloride Lithium Chloride Sodium Chloride Barium Chloride Copper (II) Chloride Potassium
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