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    abortion

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    was performed at Texas State University – San Marcos in the Chemistry lab. The concentrations used in the experiment were 0.5M of sodium hydroxide and 0.5M of sodium hypochlorite. The concentrations of the solutions found in the dumpster were calculated to be .806 M (both sodium hypochlorite and sodium thiosulfate as well). This was found by taking the 6.0% (by mass) sodium hypochlorite and multiplying it by 1 gram of solution‚ 1000 mL and 1 mol NaClO. This result was then divided by the result of 100g

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    Calcium Chloride Grainy‚ White Sodium Bicarbonate White‚ flour texture Phenol Red Solution The color of Hawaiian punch‚ thin consistency‚ semi- transparent What happens when the substances are mixed together? Observations Calcium Chloride- Foams and heats up when mixed with the phenol red. Turned orange Sodium Bicarbonate- Turned orange‚ dissolved What individual interactions are responsible for the observed changes? Questions How come the sodium bicarbonate dissolved? Why did

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    Department of Chemistry Chemistry Revision Unit II (Edexcel) (01) a) When lithium nitrate and sodium nitrate are heated separately‚ both decompose giving oxygen gas as one of the products. (i) Which of these two nitrates would decompose at the lower temperature? .........................................................………………………………………….................... (ii) Give the name of any other product formed when sodium nitrate is heated. .........................................................…………………………………………

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    Chemistry Class 9th

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    of industrially important sodium and calcium compounds including Portland cement; the biological significance of sodium‚ potassium‚ magnesium and calcium. • appreciate The s-block elements of the Periodic Table are those in which the last electron enters the outermost s-orbital. As the s-orbital can accommodate only two electrons‚ two groups (1 & 2) belong to the s-block of the Periodic Table. Group 1 of the Periodic Table consists of the elements: lithium‚ sodium‚ potassium‚ rubidium‚ caesium

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    Materials: - pyrex test tube 13 x 100 mm - 100 ml beaker - wire gauze‚ ceramic centered -1.0 M copper (II) nitrate -1.5 M sodium hydroxide -1.5 M hydrochloric acid -12 cm piece of aluminum wire Procedure: In the beaker‚ heat 50 ml water make three marks from bottom to top on the test tube that are one cm apart Add 1.0 M copper (II) nitrate to the first mark Add 1.5 M sodium hydroxide to the second mark‚ and mix. Observe and feel the tube for any heat released. put test tube in the beaker‚ and turn

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    Chloride Non Aqueous Acidimetry Blank titration Perchloric acid Mercuric acetate TS Crystal violet TS 2 Cl- + Hg (OAC)2 + 2HClO4 2 ClO4- + 2HOAc + 2HgCl2 Assay of Phenytoin Non Aqueous alkalimetry Blank titration Sodium methoxide Saturated sol’n of Azo violet in Benzene H C6H5 N--C=O C C6H5 C-NH + CH3O- O C6H5 N=C-O C C6H5 C-NH + CH3OH O OXIDATION-REDUCTION

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    is potassium (K+) t Most prevalent anion is phosphate (PO4-) Extracellular Fluid (ECF) t Fluid spaces between cells (interstitial fluid) and the plasma space t Interstitial l Most prevalent anion is chloride (Cl-) l Most prevalent cation is sodium (Na+) l Expands and contracts l 2/3 of ECF in interstitium t Intravascular (IV) l Within vascular space l Measured with blood tests l 1/3 of ECF Transcellular Fluid t Small but important fluid compartment t Approximately 1L t Includes fluid

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    Lithium‚Sodium‚Potassium‚Rubidium‚Caesium and Francium are all part of group 1.They are metals that can be easily cut.After being cut‚it is shiny but it quickly tarnishes due to the fact that the metal reacts quickly with oxygen or water.The shiny surfaces of Sodium quickly tarnishes more quickly than Lithium and Potassium more tarnishes more quickly than Lithium.This shows that the reactivity increases as we move down the group. Figure 1 Elements Melting point Boiling point Thermal

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    Questions of Diffusion

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    following would decrease the rate of facilitated diffusion? decreasing the number of carrier proteins What happens to facilitated diffusion when the protein carriers become saturated? The maximum rate of transport will occur. What happened when sodium chloride was added as a solute in the left beaker? There was no change in the transport rate of glucose. Which of the following statements about carrier proteins is FALSE? They assist in simple diffusion. Which of the following statements about

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    important safety feature in vehicles. Sodium azide‚ potassium nitrate and silicon dioxide have been used in one design of airbag. [Source: www.hilalairbag.net] Sodium azide‚ a toxic compound‚ undergoes the following decomposition reaction under certain conditions. 2NaN 3 (s) → 2Na (s) + 3N 2 (g) Two students looked at data in a simulated computer-based experiment to determine the volume of nitrogen generated in an airbag. (a) Sodium azide involves ionic bonding‚ and

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