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Hogar Banco de preguntas Química Archive 2025 January 19

Chemistry Questions from Jan 19,2025

Browse the Chemistry Q&A Archive for Jan 19,2025, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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a. b. c. d. e. SAUMP 5 problen 8.3 In the reaction of a 10.0 g sample of copper with 20.0 g of silver nitrate in solution, what mass of copper will be in excess? What mass of silver will be produced? 5) Aluminium is extracted from aluminium oxide in the following reaction. a) Calculate the maximum theoretical mass of aluminium that can be made from 1.00 kg of aluminium oxide. b) In the reaction, only 500 g of aluminium was made. Calculate the percentage yield. 13.56 A solution of benzoic acid is dissociated. In a C solution, the percentage of dissociation would be meaning a. the same. (b) porcent d. zero e. none of these. Titanium can be extracted from titanium chloride by the following reaction. a) Calculate the maximum theoretical mass of titanium that can be extracted from 100 g of titanium chloride. b) In the reaction, only 20.0 g of titanium was made. Calculate the percentage yield. c) Give three reasons why the amount of titanium made is less than the maximum theoretical maximum. Titanium can be extracted from titanium chloride by the following reaction. a) Calculate the maximum theoretical mass of titanium that can be extracted from 100 g of titanium chloride b) In the reaction, only 20.0 g of titanium was made. Calculate the percentage yield. c) Give three reasons why the amount of titanium made is less than the maximum theoretical maximum. Nitrogen reacts with hydrogen to make ammonia. a) Calculate the maximum theoretical mass of ammonia that can be made by reacting 90.0 g of hydrogen with an excess of nitrogen. b) In the reaction, only 153 g of ammonia was produced. Calculate the percentage yield. Iron is extracted from iron(III) oxide in the Blast Furnace as shown. a) Calculate the maximum theoretical mass of iron that can be made from 1.00 tonne of iron(III) oxide. b) In the reaction, only 650000 g of iron (to 3 significant figures) was made. Calculate the percentage yield. Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water and carbon dioxide chemically react to form the simple sugar glucose and oxygen gas . What mass of simple sugar glucose is produced by the reaction of 6.5 g of carbon dioxide? Round your answer to 2 significant digits. Directions: Select ALL the correct answers. Hannah does an experiment. She has two colorless chemicals that she mixes together in a beaker. Which observations indic that a chemical change occurs when she mixes the two chemicals together? The temperature of the chemicals rises . A brown solid forms in the bottom of the beaker. The chemicals change color from colorless to purple. A yellow gas forms.
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