26. The least energetic state of matter. 27. When it rains on you, which process just occurred?

Q: the temperature of the salt and water is 23.72 °C. After the salt has completely dissolved, the…

A: Given : Heat gained by the solution = 3116 J

Q: 21. Which of the following reactions releases most energy to the surroundings? *

A: l

Q: Explain how chemical reactions obey the law of conservation of energy. Include where energy is found…

A: Answer -  law of conservation of energy - The total energy of an isolated system remains constant…

Q: The study of energy changes that accompany chemical and physical changes is known as? Select one: a.…

A: It is not definition of physical chemistry because it is interactions and transformations of…

Q: The lattice energy of CsF is -744 kJ/mol, whereas that of BaO is -3029 kJ/mol. Explain this large…

A: Given information: Lattice energy of CsF = -744 kJ/mol Lattice energy of BaO = -3029 kJ/mol

Q: What happens to the energy of the system during a chemical reaction? *   A. The energy of the system…

A:

Q: 8. Based on the observations above, does a chemical reaction take place When you MIx thnese…

A:

Q: A student mixed sodium carbonate and calcium chloride in a test tube. A white solid appeared…

A: Given reactant  Sodium carbonate  Calcium chloride Product  To be determined

Q: What happens when Ethanol burns and what happens after it burns? What happens to the matter in…

A: Ethanol is a chemical substance made up of carbon, hydrogen and oxygen atoms. The chemical formula…

Q: Given the data below calculate the mass of water in the original sample: Mass of empty beaker…

A: Given values-> Mass of empty beaker =27.3894 gm Mass of beaker + Mass of compound = 30.2200 gm…

Q: Physical properties are often used to help identify substances, for example if a liquid is seen to…

A: First, using given information the specific heat of the given metal is determined.

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

A: Hydroelectric power is a renewable energy source which uses the power of moving water to produce…

Q: Section 1: Nuclear Energy What types of reactions occur in a nuclear power plant? Is the process…

A: A nuclear reaction involves fission or fusion reaction. If two light nuclei combines to form a…

Q: When heat is added to a solid, what will happen to the particles of that solid?

A: Solid  is stable in shape or we can say it has a defined shape and volume . For example ; ice is a…

Q: 1. Br2 (1 equiv) ethanol (solvent) 2. NaOH, heat

A:

Q: The First Law of Thermodynamics tells us A) that the energy of the universe is always increasing. B)…

A:

Q: How do you know (evidence) that a chemical reactions has occurred. Give specific evidence at least.

A: Chemical reaction is process by which new products are formed as a result of the reaction between…

Q: Two aqueous solutions, Solution A and Solution B, are mixed together in a beaker, and the following…

A: When two or more substances combine to form new substances,a chemical reaction is said to occur.…

Q: A scientist wants to perform a reaction in a vacuum chamber to control the experiment as much as…

A: Scientist is performed the experiment in the vacuum and he wants to know that the reaction is…

Q: It refers to the amount of energy required to transform liquid water to gas

A: Given,  It refers to the amount of energy required to transform liquid water to gas

Q: What  are the types of bioenergy made from biomass?  Can you explain each type of bioenergy?

A: Bioenergy is electricity or gas made from biomass. Biomass is the organic matter that has the…

Q: What are different properties of carbon?

A: Carbon is a non-metal belongs to group 14 in the periodic table. The atomic number of carbon is 6…

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: The study of energy changes that accompany chemical and physical changes is known as? Select one: a.…

A: Thermochemistry

Q: Cl₂ is a stable diatomic molecule. It can be decomposed to form two Cl atoms as shown below. Cl₂ →…

A: The change in enthalpy of a chemical reaction explains the amount of heat released or absorbed in a…

Q: What is the easiest process to get to the result

A:

Q: A scientist wants to perform a reaction in a vacuum chamber to control the experiment as much as…

A: Since experiment is performed in the vacuum it means their exist no medium and he wants to determine…

Q: It is the combination of two or more substances that are not chemically combined, and a new…

A: Combination of two or more substances that are not chemically combined means that chemical bonds are…

Q: This will produce the greatest amount of carbon dioxide per kilometer travelled   A. LPG B. diesel…

A:

Q: A scientist wants to perform a reaction in a vacuum chamber to control the experiment as much as…

A: Answer - According to the question - Given - Endothermic reaction -  An endothermic process is the…

Q: Which action happens at the microscopic scale as the temperature of a substance decreases and it…

A: Given: The temperature of the substance is decreasing and it's freezing.

Q: only water transferring energy to creating energy in increases endothermic slow down exothermic…

A:

Q: conc. H,SO4, heat HO HO. OH CrO3 H,SO4, OH Ph Cl2, water solvent Ph

A: Here are the reactions explained.

Q: Energy being absorbed in a substance that causes it to get cooler is known as what type of reaction?…

A: Solution All chemical processes area unit in the midst of energy changes. once a reaction takings,…

Q: A helium-filled balloon spontaneously deflates overnight as He atoms diffuse through the wall of the…

A: According to the first law of thermodynamics, There has no change in the system's internal energy as…

Q: Is the solution of ammonium chloride in water an exothermic or endothermic process.

A: When ammonium chloride is dissolved in water, it produces an endothermic reaction, i.e. energy is…

Q: Consider the combustion of liquid C5H in oxygen gas to produce carbon dioxide gas and water vapor.…

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Decide whether each of the diagrams shown below is displaying qualitative or quantitative data.

A: Qualitative data gives the idea of composition of a mixture. It includes the physical appearance,…

Q: Salt A and salt B were dissolved separately in 100-milliliter beakers of water. The water…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: What are other examples of combustion in the human body?

A:

Q: What area of study in chemistry is concerned with the heat transfers that occur during chemical…

A: Thermodynamics is one of the topic of science which is in physics as well as chemistry.

Q: When two solutions are combined in a test tube, they quickly react and the test tube containing the…

A: To know about the type of Chemical Reaction, know the meaning of exothermic and endothermic…

Q: reactants

A: Dear student I have given answer to your question in the image format.

Q: The following picture is a representation of This process releases very large amounts of energy.…

A: Given : Large amount of energy is released. And the process is as shown below.

Q: The use of living organisms to help clean up areas of pollution is known as

A: The living organisms which is used in clean up the area of pollution is Bioremediation.…

Q: How have you encountered water in its different stages of matter over the last week? How do…

A: Water exists in three state, solid state (ice), liquid state, and vapor state. The density of ice is…

Q: A student dissolves 14.6 g of lithium chloride (LiCI)in 250. g of water in a well-insulated open…

A: Given : Mass = m1 = 14.6 g Mass  = m2 = 250 g T1 = 21.0°c T2 = 33.5 °c Time = 6.3 min   Finds : To…

Q: Which statement is true of a chemical change? A. Heat is always exchanged between the system and…

A: Thermodynamics is the branch of chemistry in which we deals for the change in energy or heat, work…

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

A:

Q: Specific heat is defined as ___ - The amount of energy needed to raise the temperature of 1 g of a…

A: The solution is as follows :