Molten gold poured into a mold solidifies at atmospheric pressure, with the gold defined as the system, is the solidification an exothermic or endothermic reaction/process?

Q: Molten gold poured into a mold solidifies at atmospheric pressure. With the gold defined as the…

A: When the heat is given off from the system, then the reaction will be an exothermic reaction. When…

Q: What is the State of Water (solid, liquid, gas) at the following temperatures?

A: Any Substance has different physical states at different temperatures. Water has different physical…

Q: suppose a caterpillar is climbing the tree. Does the change in potential energy depend on the…

A: The energy possessed by an object by virtue of its position as compared to other objects is termed…

Q: If a student doesn't heat the hydrate long enough to remove all of the water, what effect will this…

A:

Q: the states that the total energy of the universe is constant. When heat exits the system during a…

A: Answer of above question are given as:

Q: I" * Critically discus the term " Heating"

A: A question about the term heating, which is to be accomplished.

Q: (a) Two pans of water are on different burners of a stove. Onepan of water is boiling vigorously,…

A: A substance's boiling point is the temperature at which a liquid's vapour pressure matches the…

Q: Differentiate between kinetic energy and polar energy?

A: Kinetic energy is the form of energy which results as object's motion whereas polar energy is the…

Q: Write the chemical equivalent of the following chemical reactions with their substance states.

A: In a chemical reaction, the reactants taking part in the reaction are written in terms of their…

Q: Calculate the total amount of heat energy needed (in Joules) to accomplish this.

A: The total heat energy required is the sum of heat energy required to heat the -15 degree ice to 0…

Q: The most important form of potential energy in molecules is ............. potential energy, Eel

A: The most important form of potential energy in molecules is electrostatic potential energy.…

Q: Introduction: For this experiment, 16.55 grams of nitrogen gas and 10.15 grams of hydrogen gas are…

A: In Haber process, nitrogen and hydrogen gas reacts to give ammonia.Change in enthalpy of Haber…

Q: olecule in units

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

Q: Mixture of water and AMMONIUM CHLORIDE is an example of Homogeneous mixture

A: A mixture, whose composition is uniformly distributed throughout the mixture is said to be a…

Q: The following are result of physical change except. a. Hot shower water turning to steam  b. Steam…

A: Physical change are those changes in which only the state of matter changes without changing the…

Q: State whether the kinetic energy of the underlined object increases or decreases as a result of the…

A: Kinetic energy is the energy an object possesses due to its motion.An object of mass (m) moving at…

Q: an endothermic phase

A:

Q: The calorie is defined as the amount of energy required to raise the temperature of of water by O 10…

A: Calorie is the unit of energy. Usually to measure the energy provided by a particular food can be…

Q: A. CALIBRATION OF THE CALORIMETER Mass of copper Mass of water Temperature of copper (boiling water,…

A:

Q: When making ice cream and for the ice to melt, the salt/ice mixture must draw energy from the system…

A: Melting is a process that requires energy to weaken the intermolecular forces present in the solid…

Q: During the condensing of a liquid, the kinetic energy is and the potential energy is a) constant,…

A: Condensing is a process in which the liquid molecules are converted into solid molecules.

Q: Find the amount of heat energy needed to raise the temperature

A:

Q: A fire is started in a fireplace by striking a match and lighting crumpled paper under some logs.…

A: Fire which has been started by striking a match and lighting crumpled paper under some logs in a…

Q: The large specific heat of water limits large fluctuations in temperature near bodies of water…

A: True or False !

Q: Determine the amount of energy necessary to raise 489 g of beryllium by 513 degrees Celsius. Report…

A: Given data,Mass of Beryllium=489gTemperature change (∆T)=513oCStandard data taken from…

Q: Condensation is an immersive reader process. A) Isolated B) Exothermic C) Endothermic D)…

A: Given A) Isolated B) Exothermic C) Endothermic D) Caloric Which describe the process of condensation…

Q: Give three (3) examples for each Independent and Dependent Variable.

A: A variable can be defined as anything whose value varies. There are two types of variables:…

Q: Sulfuric acid reacts with ammonium hydroxide.  What is the sum of the coefficients for the reactants…

A: Sulfuric acid (H2SO4) on reaction with ammonium hydroxide (NH4OH) gives ammonium sulfate ((NH4)2SO4)…

Q: Silver sulfide reacts with aluminum metal.  What is the sum of the coefficients for the reactants…

A: A balanced chemical equation is that in which all the reactants and products are written with their…

Q: A 218 g sample of steam at 121 degree celsius is cooled to ice at -14 degree celsiuc. Find the…

A: Interpretation -  To determine the change in heat content of the system when 218 g sample of steam…

Q: What is the substance undergoing a chemical or physical change known as?

A: A substance undergoing a physical or chemical change known as reactant. reactant is the substance…

Q: The required amount of heat of the liquid substance for its one mole to vaporize.

A:

Q: Hydrobromic acid reacts with sodium hydroxide.  What is the sum of the coefficients for the…

A:

Q: Which state has more Kinetic energy?a) Liquid Water b) Solid water c) Water vapor

A: The kinetic energy is energy possessed by an object due to its virtue of motion.

Q: What is the objective in the case of experiment specific heat of metal? How to determine specific…

A: A substance is when heated, the ,motion of its individual particles increases, resulting in an…

Q: is heat conductivity a phyiscal or chemical change

A:

Q: Which one of the following is not a physical property of a solid or liquid? A-compressible B-high…

A: there are  mainly three state of matter known as solid, liquid and gas .

Q: Acetic acid reacts with barium hydroxide.  What is the sum of the coefficients for the reactants and…

A: A balanced chemical equation is that in which all the reactants and products are written with their…

Q: The conversion from solid to liquid is generally (endothermic, exothermic, varies) and is called .…

A:

Q: A pan is placed over a gas stove. Describe which would be endothermic and/or exothermic (pan and…

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

Q: It has been dete of energy during

A: Given the amount of heat generated by our body during 1 hour of exercise = 5500 kJ / 1 hour The heat…

Q: Explain how the potential and kinetic energy applied to a carpenter with a nail and hammer. Be…

A: Potential energy is the energy that is possessed by the virtue of an object's position. Kinetic…

Q: It is evidential that when hot steamed water vapor comes into contact with a cold surface, water…

A: Answer: Condensation

Q: You are asked to study how much table sugar can be mixed or dissolved in water at different…

A: Dissolution can be either an exothermic process or an endothermic process. An exothermic process…

Q: ement, the total concentrati the water following alum ae of particulate solids requirin -hore init…

A: a) Given data: steady state flow = 7500 m3/d =  75 × 10^5 l/d Concentration of particulate matter =…

Q: of potential energy or kinetic energy.

A: Potential energy is defined as the energy possessed by the body by virtue of its position (energy…

Q: Is the boiling point of a chemical a physical property or chemical property?

A: Boiling point of a liquid is defined as the temperature at which vapor pressure of the liquid…

Q: Find specific heat capacities for iron, aluminum, and copper. Which of the three metals is the best…

A: Thermodynamics is the branch of chemistry which deals with the study of heat and other forms of…

Q: Which of the following cannot leave or enter a closed system heat , work or matter? Which cannot…

A: According to first law of thermodynamics the change in internal energy is expressed as shown below: