1.The quantity of heat evolved or absorbed is directly proportional to the mass of the solute that is dissolved in the solvent. Why? 2.Write your opinion from the following statement - "Used lab chemicals should be placed in disposal containers." 3.Skin contact with chemicals is the most common form of accident usually affecting the hands and forearms. What should you do to avoid it?

Q: Explain the science behind preparation of BAKING A CAKE on it's solutions, interparticle,…

A: The basic ingredients used in the baking of cake are wheat flour, sugar, eggs and baking powder.

Q: Predict the result of leaving the anhydrous crystals uncovered overnight.

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Q: If the dissolution of a salt in water is an endothermic reaction, how will the temperature of the…

A: Endothermic reactions are one , which proceeds with absorption of heat. That  is reactants absorbs…

Q: the dynamic equilibrium that exists two water tanks at right. Explain how LeChâtelier's principle…

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Q: 0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solution's…

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Q: Why is the amount of heat absorbed by the water not equal to the amount of heat produced by the…

A: Combustion is a exothermic chemical process in which in presence of atmospheric oxygen, molecules…

Q: 1. Zinc metal reacts with aqueous hydrochloric acid to produce zinc(II) chloride and hydrogen gas.…

A:

Q: If you touch the sides of a beaker containing NaOH being dissolved, will it feel warm or cold to…

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Q: A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy that…

A:

Q: What happens to the system when the temperature is decreased?

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Q: Fish require the oxygen that is dissolved in water. Would it be a good idea to thoroughly boil the…

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Q: 5. Which tablet size and the liquid combination resulted in the fastest dissolution times? A.…

A: Solving only first question in accordance with the guidelines. We will answer this question using…

Q: Explain why the melting point of your prepared alum must either be equal to or be less than the…

A: Alum : It is the double salt which is mainly used in water treatment or has medicinal uses.

Q: Discuss how the water in a dam converted its energy. What happens to this energy after conversion?

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Q: Your lab partner asks you to make 100 mL of a 1.50 M HCl solution for an experiment she would like…

A: Please find the below attachment.

Q: What is the importance of these rules?

A: To describe the importance of Aufbau principle, hund's rule and pauli's exclusion principle.

Q: Which state of matter of waste is most difficult to remediate: solid, liquid or gas? Give a brief…

A: Waste is unwanted material that is to disposed of or removed.

Q: Predict what will happen when a mixture of leaf pigments is placed on a piece of paper and solvent…

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Q: D escribe one way you can increase how quickly You could dissolve 0.5g Of carbon dioxide gas into…

A: Dissolution is a measure of how fast a solute dissolves in a solvent. There are three factors that…

Q: What is important to remember while you are using heat? * O Do not heat closed containers. You can…

A: Do not heat closed containers.

Q: I have a large cube of salt. What is a potential way of increasing the surface area of the salt…

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Q: Design a simple investigation to determine the effect on boiling point or freezing when a solid is…

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Q: Choose the answer that would properly fill in the following blanks. Using distillation to remove…

A: reactant

Q: How does adding a little amount and a greater amount of sugar affect the time it would took for the…

A: How does adding a little amount and a greater amount of sugar affect the time it would took for the…

Q: why oils leave a translucent spot on paper even after drying while ethanol and water do not

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Q: 1) If a student wants to make 225.0 mL of a 17.65M stock solution of ZnCl 2, how many grams of…

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Q: A student dissolves 13.8 g of lithium chloride (LİCI)in 200. g of water in a well-insulated open…

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Q: is a quantitative analysis of water use from entry up to discharge in a system. A. Water…

A: Water Management  is important  for effective and efficient  use of water.

Q: Water potential is the tendency of water to move from one place to another. Pumpkin cores were…

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Q: What happens when you make soap, you woul first add naoh to water, and what energy comes out of it.…

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Q: A small amount of acetonitrile (CH;CN)is dissolved in a large amount of water. Imagine separating…

A: In stage A there are some water and acetonitrile molecules. In stage B some water molecules have…

Q: A student mistakenly uses 0.31g Mg. Will the temperature change of the solution be affected/ If so,…

A: Given that -  Mass of magnesium mistakenly used = 0.31 g  Mass of magnesium actually used = 0.15 g…

Q: Calcium carbonate CaCO3(s) is used in acidified streams and lakes. This process is called?

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Q: How HgSO4 is used ?

A: Given compound: HgSO4

Q: 3 example problems with solution about TEMPERATURE AND HEAT.

A: The formula of temperature and heat is, Where, Q = heat released m = mass of an object c = specific…

Q: Which of the following is true about the following system? CSNO3 (s) CSNO3 (aq) + heat > the volume…

A: The given reaction clearly indicates the reaction is exothermic that means heat is releases by the…

Q: Compute for the total acidity of the food sample assuming that ten grams of sample was dissolved to…

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Q: doug began preparing laboratory surface disinfectant from chlorine bleach. he put on a chemical…

A: An endothermic reaction is the one where the heat is absorbed from the surroundings. Here heat flow…

Q: Given the same amount of water and ethanol, which do you think will boil first? Justify your answer.

A:

Q: The solid state of water is what? Uro the paperclip bu

A: Water is in  liquid state, it's chemical formula is H2O. H2O can exist in three phases i.e. Solid,…

Q: 1. Zinc metal reacts with aqueous hydrochloric acid to produce zinc(II) chloride and hydrogen gas.…

A: Since you have posted a question with multiple sub parts, we are entitiled to answer only first 3…

Q: the melting point of the melting point of your Before a snow storm, salt is applied to roads because…

A: Before a snow storm, the salt is applied to roads. Then we have to find out what about the melting…

Q: A student dissolves 12.0 g of lithium chloride (LiCI)in 300. g of water in a well-insulated open…

A: The balanced equation is   LiCl (aq)  ------> Li+ (aq) +  Cl– (aq) Number of moles of LiCl =…

Q: 4ab] a. Calculate the mass of calcium and magnesium in the original sample. b. Calculate for the…

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Q: Absorbed from the intestines into the blood, nitrites (NO2-) interact with the hemoglobin of the…

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