1. Universe is composed of system and surroundings A.True B. False

Q: 1. Compare objects with high kinetic energy to objects with low kinetic energy. How are different? *…

A: The amount of translational kinetic energy  that an object has depends upon two variables: the mass…

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

A: (a) A closed system is a type of system in which energy can be exchanged in the form of heat or work…

Q: a. K2Cr207 / Aq. H2SO4 /heat b. HNO3 / H2SO4 c. Br2 / FeBr3 d. NaOH, then H2O2 e. Sn / HCI f. NANO2…

A: In electrophilic aromatic substitution reaction, methyl group acts as ortho para directing group due…

Q: How many total joules of heat does it take to heat up a 3.55 g ice cube at -45.5°C to 35.5°C? g

A:

Q: C. What is the overall temperature change? i °C

A:

Q: 25. Explain the difference between heat and temperature.

A: Heat and temperature both are thermodynamic properties of system.  Heat is form of energy.…

Q: 5. Solid ammonium chloride is added to water in a beaker and dissolves. The beaker becomes cold to…

A:

Q: 12. Which term is a measurement of heat? O Cold O Hot Temperature O warm

A: Measurement of Heat : The other form of Heat is Cold ,Hot , warm .

Q: 1. What would happen to an objects potential energy as it begins moving? Potential energy would…

A: What is Potential energy Potential energy is the energy stored in an object because of its position.…

Q: a 44 gram piece of ice at 0 degrees celsius is added to a sample of water at 6.8 degrees celsius.…

A: The mass of ice is = 44 g The mass of water sample =? The temperature of ice is = 0 degrees celsius…

Q: What is the state of nature and does it still exist? If so, where?

A: The state of nature is a free entity in which no positive law exists; it is free from any form of…

Q: :Carnot heat engine is a . .A Real machine .B Experimental machine

A: Carnot heat engine is the engine in which the heat is converted to work with the maximum possible…

Q: A 34.30 g sample of solid lead is initially at 314.00°C. If the sample is heated at constant…

A: Heat flow from high temperature to low temperature. Use formula q= mc(T2-T1)

Q: A 44 gg piece of ice at 0.0 ∘C∘C is added to a sample of water at 8.0 ∘C∘C. All of the ice melts and…

A: Given: Mass of ice = 44 g. Initial temperature of ice = 0.0 oC All the ice melts. And the final…

Q: Specific Heats of Substances cal Substance Specific Heat Brick 0.20 Ethanol 0.58 Wood 0.10 Calculate…

A:

Q: releases energy

A: The physical process by which a substance transforms from one form to another is known as change of…

Q: How are q and ΔHrxn different from ΔH°rxn, (remember the definitions and unit)?

A: q is the amount of heat transferred to a system whereas  is used to describe the change in enthalpy.…

Q: h heat is r

A:

Q: How to compute for the amount nitrogen and oxygen present in a room

A: To calculate the amount of nitrogen or oxygen in a room, we use the ideal gas equation relating…

Q: D. E Time (minutes) Tomperature (°C)

A: Temperature rise of any compound indicate the increase in heat energy of that compound. Extent of…

Q: what are the states of matter of the temperature´s

A: States of matter are mainly 3 types  i) Solid ii) liquid iii) Gas These phase transition depends on…

Q: 1. Convert 360 K to oC. 2. Room temperature is -20°C. Convert to K.

A: Kelvin and celsius are two units of temperature.  0 °C is equal to 273 Kelvin.  And  0 Kelvin is…

Q: A system that cannot exchange energy or matter with its surroundings is what type of system?

A: Thermodynamic systems are of three types: Open system- These types of systems can exchange heat and…

Q: Sound require a medium in order to transfer energy. does does not

A: Sound waves are basically a form of longitudinal waves which are formed by compression and…

Q: 1) Calculate the TOTOX value of Condition 1 and Condition 2 and based on the answer, which condition…

A: To calculate TOTOX value of Condition 1 and Condition 2

Q: The Law of Conservation of Energy states that: o Heat lost by one object must be Select an answer by…

A: Energy can be defined as the ability to do work.Energy can be of different types. Energy may be…

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: A 2.72 gg sample of a substance suspected of being pure gold is warmed to 72.9 ∘C∘C and submerged…

A:

Q: How much energy is released when a 50g sample of gaseous ethanol is cooled from 78.4 degrees celsius…

A:

Q: Why is a large body of water much like an air conditioner to any adjacent land in the beginning c…

A: Water has a very high specific heat capacity, which means it can absorb a lot of heat energy for a…

Q: Is a phase change a chemical change? Why or why not?

A: In chemical changes, the new composition of elements is formed.

Q: Part A You can bring only one into your sleeping bag. Which one should you choose to keep you…

A: The specific heat capacity of Aluminium is 900 J/kg°C but for water, it is 4,200 J/kg°C. Specific…

Q: Sample 1 Food coloring dye spreads slowly in a sample of water Sample 2 Food coloring dye spreads…

A: Rate of diffusion of dye in water is directly proportional to temperature. Higher the temperature,…

Q: A coffee-cup calorimeter shown here is an example of what type of system? A) open system B) closed…

A: Coffee cup calorimeter is constant pressure calorimeter and is used for determination of specific…

Q: 4 Is a phase change a chemical change? Why or why not?

A: Ans) Phase changes are physical changes that take place when matter changes energy states, but…

Q: A 788g sample of water at boiling point 100  Celsius is boiled completely. How much energy was…

A: Latent heat of vapourisation  It is defined as physical property of substance to change one mole of…

Q: A mixing experiment is done using 74.23 grams of 82.53 celsius water and 27.44 grams of 41.29…

A: Given: Mass of water sample 1 or hot water = 74.23 g. The initial temperature of water sample 1 or…

Q: an object with high kinetic energy would feel ??? to the touch -cool -rough -warm -smooth

A: Kinetic energy of the object is directly related to the temperature as follows: K.E. = (3/2)KBT…

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

A: The system consists of those molecules which are reacting.The surroundings are everything else; the…

Q: True or false: write true if the statement is correct and write false if it is wrong. A. Average…

A: Average kinetic energy of a gas is directly proportional to the temperature of the gas in kelvin.…

Q: A 598g sample of water at boiling point 100  Celsius is boiled completely. How much energy was…

A: Given: Mass of the sample = 598g=0.598Kg Boiling point=100°C We know that Heat of vaporization of…

Q: The force that one object exerts on another object when they rub against each other in opposite…

A: The force that one object exerts on another object when they rub against each other in opposite…

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:

Q: Choose from the list below the system properties that can change only with time: a) Density, b)…

A: The properties that can change only with time is:-

Q: 5. Why does the temperature stay constant as the ice melts into water and as the water boils to a…

A: The concept behind why the temperature remains constant while phase transition can be explained with…

Q: The temperature of a Bunsen burner flame is about

A: