feeling on contact with skin. Bases readily accept hydrogen ions and has a pH level that is higher the 7. Bases have a bitter taste and neutralise d by acids‚ producing water and a salt. Some common laboratory bases are Sodium Hydroxide‚ Potassium Hydroxide and Calcium Hydroxide. Stronger bases are commonly used today in many cleaning products. Indicators help us find wether if a chemical is an acid or base. The scale that is used to find wether a chemical is an acid or a base is the pH scale. The
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distilled water. The solid copper(II) nitrate ionize in water to form copper(II) ions and nitrate ion. Hence‚ a blue solution is formed due to the blue copper(II) ion present in the solution. When excess solid is added‚ the solution will become saturated and do not allow any solid to dissolve‚ so excess solid will remain in the solution. This is shows that the equilibrium between solid and aqueous copper(II) nitrate is achieved. When the test tube is being placed in the water bath of 60 ‚ the level
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1 Body Mass Index Height: Weight: BMI: Alfred has a BMI of 25.9 which classifies him as Overweight and puts him at an elevated risk of developing health problems (1). It is recommended Alfred lose at least 3.4 kg (7.5 lbs). This weight loss will lower his BMI to 24.9‚ placing him in the Normal Weight category and reducing his risk of developing health problems (1). However‚ it is not recommended that Alfred lose more than 26 kg (57 lbs) as that places his BMI below 18.5 and puts him in the
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carbonate solution and the other was sodium chloride solution. The addition of which solution to a sample from each bottle would most readily enable the bottles to be correctly relabelled? A B C D ammonia hydrochloric acid lead(II) nitrate sodium hydroxide © UCLES 2011 5070/11/O/N/11 3 3 Oxygen was prepared from hydrogen peroxide‚ with manganese(IV) oxide as
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as cuts‚ bruises‚ burns‚ insect bites‚ rashes and scrapes quickly. Moringa oil is also helpful for purposes of tanning or maintaining a tan. This oil is rich in copper and calcium‚ which are important nutrients for the skin. Soap is a cleansing agent created by the chemical reaction of a fatty acid with an alkali metal hydroxide. Chemically speaking‚ it is a salt composed
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High School Department Effect of Crab Shells and Acacia Seeds In Purifying Water In Partial Fulfillment of the Requirements in BIOLOGY 1st Quarter Submitted by: Submitted to: I. STATEMENT OF THE OBJECTIVES To determine if the purified water is safe to drink and not cause complications when drinking the purified water. To establish if crab shells and acacia seeds can purify water To identify what specie of crab can purify the water better To know if
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in 1.25 L of 0.75 M nitric acid? A. 0.60 mol B. 0.75 mol C. 0.94 mol D. 1.7 mol E. 1.9 mol 2. Which of the following will be least soluble in water? A. potassium sulfate‚ K2SO4 B. ammonium nitrate‚ NH4NO3 C. chloromethane‚ CH3Cl D. calcium chloride‚ CaCl2 E. ethanol‚ C2H6O 3. Select the precipitate that forms when the following reactants are mixed. Mg(CH3COO)2(aq) + LiOH(aq) A. LiCH3COO B. Li(CH3COO)2 C. MgOH D. Mg(OH)2 E. CH3OH 4. Select the precipitate that forms
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Mrs Trennor Research Assignment: The Chloralkali Industry The chloralkali process is responsible for the production of chlorine gas (Cl2)‚ sodium hydroxide (NaOH) hence the name chloralkali. The process is also responsible for the production of hydrogen gas (H2). These three substances are used to make products that are essential to people’s lives. The chloralkali process does have environmental impacts;
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family members that were in the risk of heart problems. This makes me feel better knowing there is less chances that I can have problems with my heart. Looking at the food that I consumed‚ In N Out has the most fat that I ate. The burger has 10 g. of saturated fat‚ which fast foods can cause a risk of heart disease. Fast Food has fats that are not unhealthy which can lead to many risks factors such as: cancer‚ obesity‚ heart disease‚ heart attacks‚ effects in the liver‚ and digestion problems. I will
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Prefix divide by Pico- Nano- milli- 0.000‚000‚000‚001 0.000‚000‚001 0.001 centi- 0.01 deci- 0.1 deka- 10 hecto- 100 Kilo- 1‚000 Mega 1 kcal = 1000 cal 1 Cal= 1 kcal 1 cal = 4.184 1‚000‚000 • Neutral atoms contain the same number of electrons and protons. • Components of a mixture can be separated (purified) by physical means. • Physical changes alter a substance without any changes to the chemical composition. • Chemical change involves breaking
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