protons are in an atom of silver? Explain how you determined these. (2.02) 15. Define isotopes. Compare and contrast two isotopes of the same element.(2.03) 16. Two naturally occurring isotopes of calcium are calcium-42‚ calcium-44. How many protons are in a single atom of calcium-42? (2.03) 17. Two naturally occurring isotopes
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Project: The Effect of Calcium on Plant Growth Problem Statement What affect do various amounts (0 mg‚ 300 mg‚ 600 mg) of Calcium added to Vigna unguiculata (black eyed pea plants) once a week have on the overall growth (height‚ number of leaves‚ number of pods) over a 30 day period of time? Research Hypothesis If various amounts (0 mg‚ 300 mg‚ 600 mg) of Calcium are added to Vigna unguiculata (black eyed pea plants) once a week‚ then those plants receiving 300 mg of Calcium will have a greater
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Anatomy Exam Chapters 5‚6‚8‚9 Heat-Loss Center (page 840) * behavioral changes- getting shade‚ going into water * vasodilation and shunting of blood to skin surface- inhibition of vasomotor center causes warm blood flow to the surface‚ skins turns red‚ skin temperature rises‚ radiational and convective losses increase * sweat production- sweat glands are stimulated to increase secretory output‚ perspiration occurs‚ evaporative heat losses accelerate * respiratory heat loss- respiratory
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that are essential for human survival and growth. As well as calcium‚ milk also has protein‚ potassium‚ phosphorus‚ vitamin D‚ vitamin B12‚ vitamin A‚ Riboflavin‚ and Niacin. The National Dairy Council states that with just one eight ounce glass of milk a day provides the same amount of vitamin D you would get from 3.5 ounces of salmon and more than 2 ¼ cups of broccoli. Milk helps build strong bones and teeth where most of the body’s calcium is held. It also improves bone density‚ which means a lower
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According to an institute for saving bones‚ milk acidifies the body pH. Then the body will go and try to correct this mistake and take calcium for the place it can be found‚ the bones‚ because calcium will stop the acidification. In fact‚ milk is not the only‚ or the best source of calcium. Getting enough Calcium in childhood to adulthood is major for bone development. “Plus‚ dairy products can be high in saturated fat as well as retinol (vitamin A)‚ which at high levels
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age‚ neonatal hypoglycemia‚ erythrocytosis‚ and hyperbilirubinia. Composite morbidity was present in 59% of untreated GDM‚ 18% of treated GDM‚ and in 11% of nondiabetic subjects (Langer et al‚ 2005). The most common complication was macrosomia/LGA (long gestationa age) which affected 46% and 19% of the newborns from treated and untreated mothers with gestational diabetes‚ respectively. The incidence of fetal death was 5.4. 3.6 and 1.8 per 1000 in untreated‚ treated and nondiabetic mothers‚ respectively
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channels close‚ potassium channels close‚ decrease in potassium and sodium. Calcium channels open‚ increase of calcium into cell. Phase 2- Plateau phase‚ membrane still depolarized (contract). Potassium channels closed‚ L-type calcium channels stay open. Lasts 0.2 seconds/200 milliseconds. Phase 3- second set of potassium channels open‚ potassium decrease. Failing membrane potential cause calcium channels to close‚ calcium decrease to cell. Membrane repolarizes to resting potential. Phase 4-
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and Disease By: Mackenzie Gray 112-69-7540 April 7‚ 2010 Rickets is a disease that deals with a deficiency with Vitamin D. Vitamin D is important by controlling calcium and phosphate levels. If the blood levels of these minerals become too low‚ the body may produce hormones that cause calcium and phosphate to be released from the bones eventually this leads to weak and soft bones. (2) Throughout this paper we will go over a variety of characteristics involving the disease of
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dilution of hydroxide ions. 1. Repeat the procedure in Part I‚ but use a serial dilution of NaOH followed by 5 drops of calcium nitrate in each well. Data Analysis Part I 1. Determine the concentration of the calcium ion in each well after the serial dilution but before the sodium hydroxide has been added. 2. Determine the concentration of the calcium ion in each well after the sodium hydroxide has been added. 3. Determine the concentration of the hydroxide ion in each well
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Introduction 3 3. Theory 4 4. Procedure 4 5. Results and Calculations 5 – 6 6. Discussion 7 7. Conclusion 7 8. References 8 1. SYNOPSIS The purpose of this experiment is to use the back titration method to determine the percentage of calcium carbonate in toothpaste. Instead of using standard titration methods where an acid is titrated directly using a standard solution of a base‚ back titration is used because the sample to be analysed‚ CaCO3 does not dissolve in water. Hydrochloric acid
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