the density and composition of a penny it must be first weighed on a scale. Find the average mass of multiple pennies from the same year. After weighing it find the volume by placing the pennies into a 50 ml beaker with 15 ml of water. Note the change in volume to obtain the volume of the pennies‚ obtain the average volume‚ and then calculate the density by dividing the mass of the penny by the volume. 2.) To keep measurements accurate and precise test multiple pennies from the same year and make sure
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law theory 3. Exercise 1.5 Part A - Define chemistry. ANSWER: Chemistry is the science that seeks to understand what matter does by studying what atoms and molecules do. Chemistry is the science of matter and its motion‚ as well as space and time - the science that deals with concepts such as force‚ energy‚ mass‚ and charge. Chemistry is the science that studies the molecular transformations only in nonliving matter. Chemistry is the science that studies the molecular transformations
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Artificial Nails - Acrylic‚ Gel and Silk - What’s the Difference? Whether you want your nails to look beautiful because your class reunion is coming up‚ your best friend is getting married or you are heading out of town to meet a long-lost relative‚ professional nail technicians have the tools‚ experience and skills necessary to give you the gorgeous‚ natural-looking nails you desire. Choosing an Artificial Nail Material For the most part‚ nail technicians use acrylic‚ gel and silk to create artificial
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The Chemistry of Toothpaste Toothpaste is not a new thing. It has been traced back to Ancient Egypt. They used a powdered rock and vinegar‚ which created a chemical reaction that dissolves the plaque on teeth. In 1900’s people used hydrogen peroxide and baking soda or chalk‚ pulverised brisk and salt as a toothpaste. Toothpastes today‚ are mostly made up of abrasives‚ surfactants‚ a detergent‚ a thickener‚ a moisturizer‚ water‚ flavouring agents‚ coloring‚ sweeteners‚ fluoride and desensitizers
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A nail technicians serves a very important role in the beauty industry. They are the professional beauty experts that are all about nail grooming‚ maintenance‚ and beauty. Nail technicians work in this profession because they care about people and like to bring out the best in their client. Of course‚ this refers to the clients nails. A good nail technician has the ability to make their client feel welcomed and comfortable under their care. Certainly‚ the key to making the client feel at their best
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Penelope and Penny are both portrayed the same and have similarities‚ but there are differences between the two as well that make them different and unique‚ and that also ties them together in the end. Penny and Penelope both remain confident throughout their stories. Penny divorces her husband Everett‚ after he is put in jail. With a need to support her and her family‚ she seeks out to find a new husband‚ who has better qualities than Everett; one who she says has to be “bona-fide”. Penny knows what’s
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process of distillation. Distillation is the separation of volatile substances mixed with nonvolatile substances by boiling the mixture to alter the phase of the volatile substance. The researchers used the simple distillation set up to conduct the experiment. 25 ml of The Bar Vodka was used and 7 ml of distillate was collected before a temperature of 95 degrees Celsius was reached. Collected distillate was then subjected to a flammability test to confirm ethanol content. The percent ethanol was computed
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As their name suggests‚ nail fungus are fungal infections that affect either the nails on the fingers or the nails on the toes. Nail fungus infections can be distressing‚ as they tend to disfigure and discolor the nails that are afflicted of them; making them unshapely and uncared for - which might negatively impact the (subconscious) opinion other people who get to see the victim get to make about the victim. Now the key to effectively combating a problem‚ any problem‚ is to get insight into the
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Sains Malaysiana 41(4)(2012): 445-452 Effects of Spin Contamination on the Stability and Spin Density of Wavefunction of Graphene: Comparison between First Principle and Density Functional Methods (Kesan Pemumusan Spin Terhadap Kestabilan dan Ketumpatan Spin bagi Fungsi Gelombang Grafen pelumusan: Perbandingan antara Kaedah Prinsip Pertama dan Kaedah Kefungsian Ketumpatan) LEE SIN ANG*‚ SHUKRI SULAIMAN & MOHAMED ISMAIL MOHAMED-IBRAHIM ABSTRACT The effects of spin contamination on the
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| |Chemistry paper | | | | | | |Class: Ten |Roll No: |Subject: Chemistry | |Student’s
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