information then be used to calculate number of particles in other volumes of water? The mass of water per teaspoon is 5mL‚ in which is 18.013 g/mol. This information can be used to calculate other volumes of water by having to multiply it by the number of moles. 5. Calculate the number of nickel atoms in a 5-cent coin of mass 0.942g if it was made of an alloy
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***ANSWERS*** CP Chemistry Mole Review Practice Problems Find the mass of 0.89 mol of calcium chloride. 0.89mol x 111 g / 1 mol = 98.8 g Determine the number of moles of C5H12 that are in 362.8g of the compound. 362.8g x 1 mol / 72 g = 5.04 mol Find the mass of 0.159 mol of silicon dioxide. 0.159 mol x 60 g / 1 mol = 9.54 g You are given 12.35 g of C4H8O2. How many moles of the compound do you have? 12.35 g x 1 mol / 88 g = 0.140
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THE MOLE A mole (symbol Mol) is the base unit of quantity of a substance in the metric system. A mole is the quantity of a substance that contains 6.02 x 1023 units. A "unit" is the smallest measurable entity in the substance‚ generally either an atom or a molecule. The number of units in a mole was determined by Italian chemist (a scientist specializing in the composition‚ structure‚ properties‚ and reactions of matter) Amedeo Avogadro (1776-1856)‚ one of the founders of modern physical chemistry
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Mole (animal) From Wikipedia‚ the free encyclopedia This article is about mammals called "moles". For other uses‚ see Mole (disambiguation). Not to be confused with Vole. Moles Scientific classification Kingdom: Animalia Phylum: Chordata Class: Mammalia Infraclass: Eutheria Order: Soricomorpha Family: Talpidae in part Genera 12 genera‚ see text Moles are small cylindrical mammals adapted to a subterranean lifestyle. They have velvety fur; tiny or invisible ears and eyes;[clarification
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Mole Ratios Lab October 10‚ 2013 Mrs. Oliver Noah Kent AP Chemistry Block 3/4 Laboratory #4: Mole Ratios I. Hypothesis: If copper wire is placed in an aqueous solution with silver nitrate‚ then silver crystals will grow on the wire surface and the solution will gradually take on the color of Copper (II) ions. The relative quantities of reactants and products in this chemical reaction can be determined by measuring the mass of copper wire consumed in the reaction and the mass of silver crystals
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1 AND 2 STEP MOLE CONVERSIONS – MORE PRACTICE 1. How many moles does 80.0 grams of H2O represent? 2. How many moles does 45.0 grams of C6H12O6 represent? 3. How many moles does 22.0 grams of CO2 represent? 4. How many moles does 56.0 grams of N2 represent? 5. What is the mass of 2.0 moles of LiOH ? 6. What is the mass of 5.0 moles of Ba(CN)2 ? 7. What is the mass of 3.5 moles of water? 8. What is the mass of 0.75 moles of CuSO4 ? 9. How many atoms does 2.0 moles of He represent? 10. How
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Mole Project Mole S‘Mole... What‘s is it all about 1.Find and record two definition of mole wich are science related? Definition 1: a chemical mass unit‚ defined to be 6.022 x 1023 molecules‚ atoms‚ or some other unit. The mass of a mole is the gram formula mass of a substance. Definition 2: A small congenital growth on the human skin‚ usually slightly raised and dark and sometimes hairy‚ especially a pigmented nevus. 2.Wich of these moles are studied in Chemistry? The first of the two
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Common Signs of Mole Problems The mole is a burrowing animal that can cause many problems for homeowners. While they may look similar to a mouse‚ you will not have to worry about them invading your home. Instead‚ they will invade your outdoor space and cause many issues. The following are some of the more common signs of mole problems: Mole Hills If you notice that your lawn suddenly has mounds or heaps of dirt in the middle of it‚ you could have a mole problem. The moles will actually mound
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Mole Examples (Avogadro’s Revenge) 1. 2. 3. 4. 5. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 23 Astronomers estimate that there is a mole (6.02 x 10 ) of stars in the universe. One mole of high school chemistry textbooks would cover the USA to a depth of about 320 km (200 miles). Water flows over Niagara Falls at about 650‚000 kL (172‚500‚000 gallons) per minute. At this rate it would take 134‚000 years for one mole of water 23 drops (6.02 x 10 drops) to flow over Niagara Falls. Avogadro’s number (6
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Worksheet: Mixed Problems—Mole/Mole and Mole/Mass Name______________ Answer each of the following questions using the equation provided. BE SURE TO BALANCE EACH EQUATION BEFORE SOLVING ANY PROBLEMS. SHOW ALL WORK. 1. ___Cu + ___O2 ___CuO a. If 101 grams of copper is used‚ how many moles of copper (II) oxide will be formed? b. If 5.25 moles of copper are used‚ how many moles of oxygen must also be used? c. If 78.2 grams of oxygen react with copper‚ how many moles of copper (II) oxide will
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