dissolved minerals. (2) Some of the minerals come from chalk‚ limestone or marble‚ which the water may have flowed over or through. (4) Hard water contains calcium or magnesium ions. Limestone‚ marble or chalks are insoluble in pure water however they will dissolve slowly in acidic rain. If your water has emerged through limestone or chalk (calcium carbonate) it will be hard. (1) Soft water is gratification water in which the only cation (positively charged ion) is sodium. The minerals in water give
Premium Calcium carbonate Hard water Water
Equation 2: Ca2+ (aq) + CO32-(aq) → CaCO3 (s) 3. Equation 3: CaCl2 (aq) + M2CO3→ CaCO3 (s) + 2MCl (aq) The precipitated calcium carbonate is then filtered‚ dried‚ and weighed. The moles of calcium carbonate‚ CaCO3‚ are equal to the moles of Group 1 metal carbonate‚ M2CO3‚ added to the original solution. Dividing the mass of the unknown carbonate by the moles of calcium carbonate yields the formula weight‚ and thus the identity‚ of the Group 1 metal carbonate. Experiment Overview The purpose
Premium Laboratory equipment Calcium carbonate Filter paper
calicum‚ that are present in multiple samples of water by adding another chemical to create a reaction to percipitate the calcium out of the water into a measureable solid Materials: balance (.001g)‚ 100ml beakers‚ graduated cylinder‚ drying oven‚ Na2CO3 (sodium carbonate)‚ stir rod‚ scoopula‚ DI water‚ watch glasses‚ filter paper‚ ring stand‚ funnel‚ water samples with CaCl2 (calcium chloride) Procedure: 1. Measure out a 20ml sample of each A‚ B‚ and C hard waters 2. Place samples in separate beakers
Premium Calcium Water Sodium
molarity of EDTA and to determine the hardness of water by measuring the concentrations of calcium and magnesium in a water sample by titration. Abstract: The aim of this experiment was to determine the molarity of a sample of EDTA and then to use this sample to determine the hardness of a sample of water. This was done using a titrimetric method. This was standardized using calcium chloride. The calcium chloride was weighed‚ dissolved and diluted to a known volume. A buffer and indicator were added
Premium Calcium Calcium carbonate Water
hydrolyze the enzyme Urease efficiently to produce microbial concrete. Such bacterial are known to produce calcium which is useful in giving strength to cement. We are working in 2 stages. Stage 1: Here we check the effect of bacterial solution on cement mortar and along with that we check the effectiveness of the bacterial solution to fill the cracks in concrete by precipitation of calcium in the cracks. Stage 2: To prepare concrete using the cement and solution (bacterial) in optimum ratio
Premium Nitrogen Calcium carbonate Bacteria
was completed using an approximately .7340g Na2EDTA/500mL solution. A 1.000g/L calcium ion solution was used as the primary standard with approximately 3mL of ammonium chloride as a buffer and Erichrome Black T as the indicator solution. Three titrations were performed to ensure accuracy of the molarity of the Na2EDTA solution. The 1.000g/L calcium ion solution had to be converted to M so 1g/L/100.1g=.009990M calcium ion solution. Titration 1: 10.00mL CaCO3; .00999MCaCO3X.0100L= .0000999mol CaCO3
Premium Calcium Hard water Calcium carbonate
Experiment 3: Separating and Determining the Mass of Calcium Ion in a Calcium-Enriched Tablet In this lab‚ we dissolved a calcium-enriched tablet and participate the calcium ion as calcium carbonate. Our purpose is to determine the masses of calcium carbonate and calcium ion‚ to determine the mass percent of calcium ion in the tablet and to compare the masses and the percent with the listed tablet ingredients. This time we used a 150mL beaker‚ analytical balance‚ forceps‚ a 50mL graduated cylinder
Premium Chemistry Water Solubility
Chapter 50: Nursing Management: Endocrine Problems Test Bank MULTIPLE CHOICE 1. A 45-year-old male patient with suspected acromegaly is seen at the clinic. To assist in making the diagnosis‚ which question should the nurse ask? a. “Have you had a recent head injury?” b. “Do you have to wear larger shoes now?” c. “Is there a family history of acromegaly?” d. “Are you experiencing tremors or anxiety?” ANS: B Acromegaly causes an enlargement of the hands and feet. Head injury and family history are
Premium Nursing Blood sugar Calcium
because the bone is largely made up of calcium salts. The vinegar broke the calcium phosphate down‚ leaving only collagen left. As we learned collagen is flexible so this made the bone bended easily. Calcium gives bone its strength and durability. Each time I changed the vinegar I was dumping the extracted calcium out. This shows how much of an important role calcium plays‚ without it bones would be flimsy. It also reveals how the structure of bone‚ having calcium‚ allows it to function properly for
Premium Nutrition Water Calcium
this lab we were give 9 different elements and had to determine if they were Single Displacement‚ Double Displacement‚ Synthesis‚ Decomposition and Combustion. A.) Aluminum and Copper (II) Chloride‚ my hypothesis is a Single Displacement. B.) Calcium Carbide and Water‚ my hypothesis is a Double Displacement. C.) Zinc and Hydrochloric Acid‚ my hypothesis is a Single Displacement. D.) Alcohol and Oxygen‚ my hypothesis is a Combustion. E.) Lead (II) Nitrate and Potassium Iodide‚ my hypothesis a Double
Premium Sodium bicarbonate Aluminium Chlorine