CHAPTER I INTRODUCTION Generally‚ people use body and facial power to keep their skin soft and fresh and to feel comfortable‚ especially women who use this concentrate as a base for their make –up. Moreover‚ those who are living in relatively humid surroundings perspire profusely and with the help of Face and Body powder‚ they are able to reduce the odor and keep their skin dry for a longer period of time. However‚ these products are mixed with ingredients which can be harmful to
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Aim: determine the mass of calcium carbonate in chicken eggshells and hence its percentage by mass Apparatus Uncertainty 25.00 cm3 pipette ± 0.03 cm3 50.00 cm3 burette ± 0.05 cm3 250.0 cm3 volumetric flask ± 0.3 cm3 50.0 cm3 measuring cylinder ± 0.5 cm3 Electronic balance ± 0.01 g Uncertainty of apparatus Measurement Mass of eggshell = 3.15 ± 0.01 g Volume of HCl added = 50.00 ± 0.5 〖cm〗^3 Volume of solution = 250.0 ± 0.3 〖cm〗^3 Volume of NaOH pipetted = 25.00 ± 0.03 〖cm〗^3
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Pulverized chalk (Calcium carbonate) mixed with black pepper powder (Piper nigrum) as cockroach repellent Acknowledgement: After the long run of making this research study‚ finally the researchers finished their work successfully. It is because of the numerous individuals advises‚ generous assistance and invaluable help. The researchers would like to convey their heartfelt gratitude and appreciations: Foremost‚ to our almighty and powerful God who gave us the heavenly knowledge and wisdom
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PROJECT IN MAPES FESTIVALS IN THE PHILIPPINES Submitted by: Submitted to: Higantes Festival - Angono‚ Rizal A festival that dates back to the late 1800s‚ the town of Angono celebrates the Higantes Festival which is characterized by huge papier mache effigies or "higantes". The fiesta is held in honor of San Clemente. The town’s fiesta is celebrated every
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How Do Water and Other Molecules Enter and Leave Cells Rebecca Black April Clawson April Rutherford Kymberly Swope Biology 1224-Introduction to Biology for Majors Abstract Ann‚ April‚ Kymberly and Rebecca ran tests on decalcified eggs using different solutions to discover how water and other liquids enter and leave cells. The experiment consisted of soaking the eggs in varying solutions for five minutes‚ then draining them; recording their weight before and after each interval. The ladies hypothesized
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Science Investigatory Project COMPARATIVE STUDY ON CHALK DUST‚ COFFEE GROUND‚ AND CINNAMON SPICE AS ANT REPELLANTS Faith II Group of Year III- St. John CHAPTER 1 BACKGROUND OF THE STUDY: There are several household problems we and our helpers encounter at home. These may be issues regarding food supply and storage‚ cleanliness and sanitation. One of the most common problems is the presence of household ants‚ especially the red ones‚ causing a disturbance in our own system of food storage
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Running Head: Eggshells used in chalk production Eggshell as an alternative source in chalk production Ryan Jason U. Joquico Lourdes School of Mandaluyong II-Blessed Andrew Hyacinth Longhin September 5‚ 2011 CHAPTER I INTRODUCTION Background of the Study The Research is about the effectiveness of eggshells as an alternative ingredient in chalk production. The study is very efficient in these days because many people are in need of chalk. The components of chalk are so complex
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ingredients. The eggshell is often considered as useless. Usually‚ this part of the egg is thrown away after the eggwhite and yolk are taken from it and used. Although‚ there are some who used eggshells as ornaments‚ they are few‚ and this practice is not common. Study shows that the eggshell contains calcium carbonate - a form of limestone that can be converted to chalk – that material that we use in writing on the blackboards. The purpose of this research is to produce a chalk that is non-toxic
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Salt and chalk were rubbed across teeth. The Chinese chewed on twigs to freshen their breath. Nevertheless‚ chemicals like fluoride‚ xylitol‚ calcium carbonate‚ and chlorhexidine are proven to work stronger in the act of protecting teeth. This experiment will look at whether the eggshells (which acts as teeth) are more damaged by the natural solutions or chemical solutions‚ and which one of the solutions
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appear throughout ancient history and well into the middle Ages. Unfortunately‚ many of these toothpastes contained corrosive elements that dissolved tooth enamel. Toothpaste as we know it emerged in the 1800s‚ with ingredients that included soap and chalk. In 1892‚ the first collapsible tube was marketed and reigned supreme until 1984‚ when the pump dispenser was introduced. In 1956‚ Proctor & Gamble introduced Crest brand toothpaste with fluoride. Dental floss like substances have been found in
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