acid + metal -------->salt + hydrogen acid + metal oxide--->salt + water acid + metal carbonate---->salt + water + carbon dioxide Element | Symbol | Valency | Hydrogen | H | 1 | Oxygen | O | -2 | Carbon | C | 4 | Calcium | Ca | 2 | Iron | Fe | 2 | Aluminium | Al | 3 | Sodium | Na | 1 | Potassium | K | 1 | Magnesium | Mg | 2 | Zinc | Zn | 2 | Copper | Cu | 2 | Silver | Ag | 1 | Lead | Pb | 2 | Chloride | Cl | -1 | Sulphate | SO4 | -2 | Hydroxide | OH
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which was CuSO4 ?H20. Not only the percentage of water can be found‚ the moles of water can be found per one mole of anhydrous salt. An anhydrous salt is a hydrate that lost its water. Using various lab equipment such as burners‚ crucible‚ and balance‚ and techniques such as the mass-to-mole ratio and mass to percentage‚ the percentage of water in a hydrate was determined. Salts appear to be dry‚ yet when heated‚ surprisingly large quantities of water are driven off‚ because water is loosely bonded to
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to Consensus Action on Salt and Health (CASH)1 the promotion of extremely high salt foods targeted at school lunchboxes is an unethical marketing practice. Four out of five items surveyed by CASH used a combination of at least three marketing techniques to specifically aim at children. "The use of marketing practices targeted at children to sell highly salted products is unethical." says Registered Nutritionist and Chartered Marketer‚ Kathy Lewis of Consensus Action on Salt and Health. "Ethical practices
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BUFFERS By: Luis P. Bazan‚ RPh.‚ Ph.D. A buffer solution is a solution of: 1. A weak acid or a weak base and 2. The salt of the weak acid or weak base Both must be present! A buffer solution has the ability to resist changes in pH upon the addition of small amounts of either acid or base. Consider an equal molar mixture of CH3COOH and CH3COONa CH3COOH (aq) H+ (aq) + CH3COO- (aq) Adding more acid creates a shift left IF enough acetate ions are present 16.3 Which of the
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separate components of a heterogeneous mixture can be separated by using differences in the components’ physical properties. In this laboratory experiment‚ I attempted to experimentally verify that the components of a heterogeneous mixture containing salt‚ sand‚ and benzoic acid can be separated using the separate components’ solubility properties (ability to dissolve in water). Because it is known that organic compounds (such as benzoic acid) are very soluble in organic solvents‚ a hexane: ethanol
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immediately with a wet sponge or foam brush. INTRODUCTION If an opinion is said to not hold water it means that the point of view or statement put forward is illogical‚ inadequate‚ not sound or can be shown to be wrong. Hydrates are inorganic salts that hold water. They contain a specific number of strongly bonded water molecules as part of their crystal structure. Such water molecules are called water(s) of hydration‚ or water(s) of crystallization. The formula of a hydrate consists of the formula
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Egg flotation Objective/Question/Problem My objective is to see which egg will float. The question is how much salt is needed to be added to make the egg float. The problem is that I do not know how much salt is needed to make an egg float. Hypothesis If I add salt to the water then the egg will float because the egg has a density that is lower that the density of the fluid it displaces. Background Information If the object has a density that is higher than
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characteristics of salt affected soil from Barhanpur‚ M.S.‚ India B. S. Mali‚ S. S.Thengal‚ P. N. Pate Department of Botany‚ Tuljaram Chaturchand College‚ Baramati‚ M. S.‚ India _____________________________________________________________________________________________ ABSTRACT Salt affected areas‚ due to excess irrigation are major problem all over irrigation the world. Due to excess irrigation‚ the salt present in the water remain saturated in the soil. Assessment of seasonal variation in the salt concentration
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2 Plastic cups 2. Tap Water 3. Teaspoon 4. Bag of salt 5. Freezer 6. Clock 7. Paper 8. Pencil Procedures: 1. Take plastic cup and pour in one cup water in each 2. Take one teaspoon of salt and mix it in one of cups 3. Put both cups in the freezer 4. Observe. Conclusion: When salt is added to water it slows the freezing process down‚ therefore the freezing point of tap water is higher than the freezing point of salt water. Hypothesis: If... ‚ then...
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Solubility Rules are as follows: 1. Salts containing Group I elements are soluble (Li+‚ Na+‚ K+‚ Cs+‚ Rb+). Salts containing the ammonium ion (NH4+) are also soluble. 2. Salts containing nitrate ion (NO3-) are generally soluble. 3. Salts
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