1. When a chunk of dry ice (solid carbon dioxide) is placed out in the air, the solid gradually disappears and a gas is formed above the solid. Does it go through chemical or physical change has occurred? Explain. 2. When the molecules of the solid CO2 becomes free upon exposure to the air. What happened to the bonds of the molecule?

Q: How is kinetic energy related to temperature. Explain how it affects states of atoms/compound

A: Ideal gases are hypothetical gases which do have real existence. A gas can behave ideally at low…

Q: NaCl(s) + heat ->

A: The reaction given is heating of NaCl solid.

Q: Transition State Ea Reaction Coordinate

A:

Q: Which of the following statements is true about the reaction described in the energy diagram below?…

A: GIVEN:-

Q: Consider a hypothetical chemical reaction: A+B -C+D (In this equation A, B, C and D stand for some…

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Q: 4. Write balanced formation equations for the following, indicate proper states: → N2O3(g) C2H3F(g)

A: A question based on general chemistry that is to be accomplished.

Q: The complete combustion of which of the following substances produces carbon dioxide and water? A)…

A: Answer: C) C8H18

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A: Given: In this experiment, the starting temperature of the water receiving the heat from the metal…

Q: What is the importance of the five basic types of chemical reactions (combination, decomposition,…

A: There are five kinds of chemical reactions.  1) Combination reaction .  2) Decomposition reaction.…

Q: C. PREDICT THE PRODUCTS AND IDENTIFY THE TYPE OF CHEMICAL REACTION. 1. H,0 2. H, + O, → 3. KBr + Cl,…

A:

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A:

Q: 50.0 g of water at 22 °C is mixed with 125 g of water initially at 36 °C. What is the final…

A: Heat lost by hot water is just equal to heat gained by cold water.

Q: 1. Write a chemical reaction that describes formation of the silver image in black and white…

A:

Q: 13. Determine the amount of heat (in kJ) given off when 120 g of NO2 are produced according to the…

A: Nitrogen monoxide reacts with oxygen to form nitrogen dioxide. The equation for the balanced…

Q: what is the product?

A:

Q: Write a chemical equation representing the decompositionof water into two gaseous products. What…

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

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Q: The photo showed on May 6, 1937 of the explosion of the Hindenburg airship at Manchester Township,…

A:

Q: www-awu.ale O STATES OF MATTER Solving for a gaseous reactant Ancient Romans built often out of…

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Q: What is chemical energy? How is energy stored in chemical bonds?

A: To find: What is chemical energy. How is energy stored in chemical bonds.

Q: The importance of combustion in our daily lives. List atleast 10 examples.

A: The combustion is a type of oxidation reaction in which substance reacts with oxygen and carbon…

Q: A diamond is said to last forever. Many believe this eternal existence is related to its hardness…

A: Diamond is an allotrope of carbon. It is a solid form of carbon with its atoms ordered in a crystal…

Q: Now consider Oxygen. Can it become stable by 2 oxygen atoms reacting together? Draw the resulting…

A: Given statement is :  Now consider Oxygen. Can it become stable by 2 oxygen atoms reacting together?…

Q: Write a balanced equation for the formation reaction of each of the following substances: a)…

A: As per our guidelines only the first three question are solved for multiple questions. Kindly post…

Q: The chemical reaction CaO + H2O Ca(OH)2 is exothermic. This means that: O A. the reaction releases…

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A:

Q: What mass of carbon dioxide is formed from burning one gallon of octane, C8H18? Octane has a density…

A: Answer :-  a) Mass of carbon dioxide is formed from burning one gallon of octane, C8H18 = 8216.4 g…

Q: Potassium chlorate reacts to form potassium chloride and oxygen gas. ? Explain how ?

A: Potassium chlorate reacts to form potassium chloride and oxygen gas.

Q: What are the practices that are considered waste minimization and pollution prevention?

A: Waste minimization and pollution prevention are the major and most important things.

Q: How much heat is released during the combustion of 1.24 kg of C5H12?

A: Given: 1.24 kg of C5H12 The conversion of kg into g is as follows. 1 kg=1000 g1.24 kg=1240 g

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Q: How many grams of oxygen are required to completely burn 4.2 g of C3H8? [assume complete combustion]

A: Propane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

Q: How much energy is produced when CO2 is formed if each C-O bond releases 350 kJ?

A: C(s]+O2(g]→CO2(g]

Q: The limiting reagent is? Select one: a. the reactant the determines the number of reactants b. the…

A: Using concept of limiting reagent and definition.

Q: If the bonds in the reactants are broken, does a chemical reaction occur?

A: When some bonds in the reactants are broken and some new bonds are formed , then a chemical change…

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Q: Which statement about the reaction illustrated in the diagram is true? (B) (A] (C) (D) O The energy…

A: Which statement is true?

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A:

Q: 1. Hydrogen (H2) and oxygen (O2) react to produce water (H2O). (a) Write down the equation for the…

A:

Q: НCN H3O*, heat X Y

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Q: What is global warming? How does the burning of fossil fuels contribute to global warming? Explain…

A: Green house effect The natural process of warming of earth surface is called green house effect.

Q: explain why CO2 concentrations cycle throughout the year?

A: Carbon dioxide (CO2) is one of the constituent gases present in the atmosphere. The atmospheric CO2…

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A: Formation reaction of nitrogen dioxide is given