Direction: Identify the property of water shown in the pictures below. Write the letter of your answer in your science notebook. A- High boiling point B- High specific heat C-Less dense when in solid form D- High heat of vaporization E- High surface tension

Q: Which of the following regions corresponds to liquid state? 80 60 40 20 Temperature ("C)

A: Interpretation : We have to tell which of the following will tell about liquid curve.

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: Calculate the amount of heat needed to melt 45.0 g of solid hexane (C,H,) and bring it to a…

A: Consider the given information is as follows; Initial Temperature (melting point of hexane) = T1 =…

Q: The mountain point of ice is 0.00°C. Calculate the amount of heat needed to melt 12.754 g of ice at…

A: Concept q=n×ΔH where:q = heat (kJ)n = molesΔH = enthalpy of fusion (kJ/Mol)  or q= m ×ΔH  where  q=…

Q: the differences between ice, water and steam. Think about which one you can touch easily and the…

A: The following points involves the property of ice water and steam

Q: A hot water bottle contains 540.36 g of water at 31.2 oC. If the water freezes at a temp of 0.0 oC,…

A: Heat is the form of energy that is transferred between system or objects with different…

Q: Refer to the data chart below when answering this question. Which substance has greater attractive…

A: Introduction Attractive forces in chemistry refer to the interactions between molecules that cause…

Q: Use the heating-cooling curve below to answer the following questions. 160. 140 120 100 80 60 40 20…

A:

Q: How much heat is required to evaporate 108.7 g of water at 100.0 °C?

A: The molar heat of vaporization, ∆Hvap also called the molar enthalpy of vaporization, tells us how…

Q: How many joules are released when 450 grams of water are cooled from 4 x 10^7K to 1x10^-9

A: In the question we have to calculate the energy released in Joules when temperature decreases from…

Q: Q6. Calculate the amount of heat (kcal) released when 50.0 g of steam at 100°C hits the skin and…

A:

Q: What would be the final temperature of thesystem is 70 grams of lead at 150 degrees C is dropped…

A:

Q: Click on the segment of the diagram where the temperature is equal to the melting point. H в с C A…

A: Correct answer is B-D segment or point C. At temperature equal to melting point physical state is…

Q: Calculate the amount of heat needed to melt 64.5 g of solid benzene (C,H,) and bring it to a…

A:

Q: The heat of fusion of water is 79.9 Cal/G. How much heat would be required to melt 75.9 G of ice?

A: Given: Mass of ice, m =75.9  g The heat of fusion of water =79.9 Cal/g

Q: Is the boiling point of a liquid higher, lower, or the same at a higher altitude? Explain your…

A: Boiling point of liquid = the temperature at which vapor pressure of liquid become equal to…

Q: The heat of fusion of water is 79.9 cal/g. How much heat would be required to melt 94.8 g of ice?

A: Step 1:

Q: Melting point can be defined as the temperature when a solid becomes a liquid. The melting point of…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: I cal 5. How much energy is required to raise the temperature of 1000.0 g of water from 23.00 °C to…

A: Given : mass = 1000 g

Q: Which of the following takes place when water condenses? Group of answer choices Heat is released…

A: Since in the process of condensation of water, the vapour converts into the liquid. And since we…

Q: Calculate the amount of heat needed to melt 36.9 g of solid hexane (C6H₁4) and bring it to a…

A:

Q: How do you observe water's solid and liquid density differences on a hot summer and cold winter…

A: Solid water, or ice, is less dense than liquid water.

Q: Can you help me number 6? Is this correct answer with show my work including the Significant Figures…

A:

Q: How many calories are released when 10.0 grams of steam condenses?

A: I am assuming that the steam condenses from the boiling point to the melting point. Thus, the steam…

Q: How much heat is released when 105g of gas phase water at 100 degrees Celsius is cooled to ice at…

A: Given, mass of gas phase water = 105 g

Q: immiscible liquids layer according to buoyancy: more buoyant (less dense) substances layer above…

A:

Q: Calculate the molar heat of vaporization of water using the graph you generated from excel.  the…

A: GivenEquation of graph y = -22.144 x + 5.0967Molar heat of vaporization = To be determined

Q: Calculate the amount of heat needed to melt 147. g of solid benzene (C,H) and bring it to a…

A:

Q: Can you help me number 2? Is this correct answer with show my work including the Significant Figures…

A:

Q: Calculate the amount of heat needed to melt 130. g of solid acetic acid (HCH3CO₂) and bring it to a…

A: We have to calculate the heat needed to melt 130 g acetic acid and bring it to temperature 64.3°C

Q: What mass of water will give up 240 calories when the temperature drops from 100 deg C to 68 deg C

A: Q = 240 calories 1 C = 4181 J  240 Calories = 240*4181 = 1.0 x 106 J  Mass ,m = ?

Q: Calculate the amount of heat needed to melt 144. g of solid hexane (CH₁4) and bring it to a…

A:

Q: What is the physical state of tungsten (solid, liquid, or gas) at a temperature of 5993K if the…

A: At any temperature below the melting point temperature the physical state of tungsten will be solid.…

Q: Formaldehyde is a disinfectant, a preservative, and a raw material for plastics manufacture. Its…

A: Melting point is a temperature at which solid changes to liquid state. Given that melting point of…

Q: How much energy is needed to convert 53.9 grams of ice at 0.00°C to water at 52.9°C? _______ J…

A: Given:      specific heat (ice) = 2.10 J/g°C     specific heat (water) = 4.18 J/g°C     heat of…

Q: The heat of fusion of ice is 80.0 cal/g.  How many kilojoules are required to melt 1.00 mol of ice?…

A: GivenHeat of fusion of ice = 80.0 cal/gmole of ice = 1 moleMolar Mass of water/ice = 18 g/moleMass…

Q: Calculate the amount of heat needed to melt 171. g of solid methanol (CH,OH) and bring it to a…

A: Moles are defines as the ratio of mass by the molar mass. The heat of fusion is the heat required to…

Q: Calculate the amount of heat needed to melt 181. g of solid hexane (C6H₁4) and bring it to a…

A:

Q: Calculate the amount of heat needed to melt 76.0 g of solid ethanol (CH₂CH₂OH) and bring it to a…

A: 29.301kJ amount of heat needed to melt 76g of solid ethanol and to bring it to a temperature of…

Q: 7. If 25.6 J of energy raised 786 g of a substance from 20.0°C to 35.0°C, what is the specific heat…

A: Formula :   we know heat change(q) is calculated by using the mathematical formula -  q = m×S×∆T…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.