Chemistry 11 Santa Monica College Determination of Molecular Mass via the Dumas Method Objectives: • To determine the molecular mass of an unknown volatile liquid using the Dumas method and the ideal gas law. Background: In the early 19th century‚ Jean-Baptiste Dumas‚ a distinguished French chemist‚ created a relatively simple method for determining the molecular mass of a volatile substance. In this experiment we will use a modified version of his technique to determine the molecular
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(b). (b) Label eight test-tubes 1 - 8 and in tube 1 collect saliva as follows: (i) Thoroughly rinse the mouth with water to remove food residues (ii) Collect about 50 mm saliva. (c) Pour half the saliva into tube 2 and place the tube in the boiling water bath for 3 minutes. (d) Using a graduated pipette or syringe‚ add 5 cm3 2% starch solution to tubes 3‚4 and 7. (e) Rinse the pipette or syringe and use it to transfer 5 cm3 boiled saliva from tube 2 to tube 3. Shake the tube
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mg‚ and Simvastatin 20 mg. Her vital signs are; BP 132/86 mmHg on the right arm‚ 72 rpm‚ 20 bpm. Client’s states last radiographs were on June 6‚ 2017. She brushes her teeth twice a day with a medium toothbrush‚ flosses twice a day‚ and uses a mouth rinse. Upon oral examination‚ the client’ reveals generalize pale pink gingiva and localized purpulished red tooth number 25 and 26. She has a evidence recession on tooth number 2‚3‚4‚5‚6‚7‚11‚12‚13‚17‚18‚22‚23‚25‚26‚28‚29 and 31 on the buccal surfaces
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Christmas table and share a wafer with the whole family wishing each other Merry Christmas. Then they sit around the table and eat. Although the meal varies for different areas‚ it is normally without meat and there are traditional courses such as: a beetroot soup with mushroom dumpling‚ herring‚ carp in aspic‚ cabbage rolls filled with mushrooms‚ grain and polish noodles. The table has crisp a white tablecloth with Hay laid at one corner this represents the manger in which Jesus was born. One unusual
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Technology upgrade The objective here is to reduce meat contamination by establishing a Microbial lab within each meat factory in United States. This method will allow us to test animal intestine to see if they are contaminated by bacteria. Bacteria can be difficult to sample and analyze‚ for many reasons. Natural bacteria levels in streams can vary significantly; bacteria conditions are strongly correlated with rainfall‚ and thus comparing wet and dry weather bacteria data can be a problem; many
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(source 9). Also‚ not all people are born with perfectly white teeth. No one hears of a baby being born with sparkling white teeth. In fact‚ not all babies are born with the same tooth shade. “Aging is not pretty‚ and your mouth is no exception” (source 10). Fluoride‚ rinses‚ and gels can help make your teeth look and feel younger (source 14). To keep your smile healthy‚ you must: brush with fluoride‚ floss at least twice a day‚ and visit your dentist regularly (source
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pain of one or both parotid glands are the usual main symptoms. The mouth may feel dry. Chewing and swallowing may be sore. Fever (high temperature)‚ headache‚ feeling tired and being off food may develop for a few days. ... Mild abdominal (tummy) pain may occur. Stay off work or school until five days after you first developed symptoms wash your hands regularly‚ using soap and water always use a tissue to cover your mouth and nose when you cough and sneeze‚ and throw the tissue in a bin immediately
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10 neem leaves‚ boil them with small segments of orange peel in a little water. When they become a little soft‚ let them cook a little and then pound them into a pulp. Apply this to your face and let it sit till it starts drying after which you can rinse with cold water. This face pack will help in clearing acne and prevent breakouts. It also helps in getting rid of whiteheads and blackheads. In case you have very dry skin‚ you can add a little honey and yogurt to this pack. 5. Turns Skin Clear: Another
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SLIMCUT PERFECT FIT DIET ThE DIET ThAT YOU DESIGN TO FIT YOUR LIFESTYLE. FOR A MORE ENERGETIC & SLENDER YOU. ThIS EATING PLAN IS FORMULATED bASED ON ThE vARIOUS FOOD GROUPS AND A PRE-DETERMINED AMOUNT OF PORTIONS ThAT ARE ALLOwED‚ PER GROUP PER DAY. ThIS wILL ShOw YOU hOw TO ShOP whAT TO ShOP ‚ ‚ FOR‚ whAT FOOD TYPES CAN bE ChOSEN OR MIxED AS wELL AS PORTION CONTROL. KEEPING ThE DAILY ALLOwANCES IN MIND ‚ YOU CAN ChOOSE YOUR OwN vARIETY OF FOODS ThAT IS INTERESTING ‚ FUN AND SUITS YOUR PERSONAL
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that it continued at a steady increase of 5% per year. Originally‚ Listerine was the market leader. It positioned itself as a germ killing mouthwash that eliminated bad breath. Scope was introduced in 1967 as a green‚ mint-tasting mouthwash that was mouth refreshing and provided bad breath protection. Scope branded itself not only protection to bad breath‚ but also that it tasted better than the other mouthwashes available. Competitors of Scope were launched such as Listermint‚ which held 12% of the
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