A substance has a melting point of -22°C and a boiling point of 75°C. What state will it be at the following temperatures? a. -75°C b. 125° C с. 25° С d. 0° C e. -15°C Blank # 1 Blank # 2 Blank # 3 Blank # 4 Blank # 5

Q: How much heat is needed to melt 10.0 grams of ice at -10°C until it is water at 10°C? a.+3963j…

A: In these type of questions, we have to calculate the overall heat change i.e., heat required to…

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: 140 120 100 P. 80 60 40 20 - 20 20 40 100 120 Time (min) Answer the following questions for the…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3. The…

Q: D Label the phases A to B, C to D, and E to F on the graph. B Heat (J) Temperature ("C) F.

A: In this question, we want to Label the phases A to B, C to D and E to F  You can see details…

Q: 52. A sample of 55g of ice is at a temperature of -22°C. How much energy will it take to convert it…

A: Given data: Mass of ice = 55 g Temperature = -22o C Formula used:

Q: d 10 The processes of melting and evaporation involve changes in the of a substance.

A: Melting is the change to solid to liquid at its melting point.  Evaporation is the change of liquid…

Q: What amount of ice must be added to 540.0 g of water at 23 deg * C to cool the water to 0 deg * C…

A: Answer: This question is based on conservation of energy where heat lost by water will be equal to…

Q: Phase Changes for a Substance: Temperature vs. Kinetic Energy 340 330 320 310 E 300 B 20 280 A 270…

A: Hello. There are multiple subparts to the question. The first three subparts have been solved. To…

Q: Image: Graph, Energy on X axis, Temp on Y axis. Horizontal line labelled "A" beginning near bottom…

A: Molar mass of N2 = 28.02 g/mol Melting point = -210°C Boiling point = -196°C Heat of fusion = 0.7200…

Q: A hypothetical element, Le, has a body-centered cubic structure with a density of 7.27 g/cm3.…

A: Density = 7.27 g/cm3

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

A:

Q: The space mission landed a probe on an alien moon and found that its surface temperature was about…

A: The answer to first question is given below.

Q: Refer to the figure below. At 300 K, if the pressure is increased from 0.006 atm to 1 atm, the phase…

A:

Q: Section A the solid is warming but also not melting. Section B is Melting. Section C the Liquid is…

A: Answer : From temperature, -5oC to 5 oC, solid states gets heated ( part a) from temperature 5 oC (…

Q: How much heat is required to heat 59.3g of liquid ethanol from -7*C to the vapor state at 78*C

A: Given,  Mass of liquid ethanol = 59.3 g.  Initial temperature = - 7 °C Final temperature = 78 ° C…

Q: A metal has an atomic mass of 108 g/mol, an atomic radius of 0.144 nm, and a face-centered cubic…

A: Given,Atomic mass of a metal = 108 g/molAtomic radius of metal = 0.144 nmStructure Lattice type =…

Q: Which of the following might be best described by the following set of properties? 1. white solid…

A: Given: The compound is a white solid with a melting point of 772 oC.

Q: creating a heating curve . Graph the heating curve of ethanol using the information given. Check off…

A: Melting temperature and point = The temperature at which solid is converted into liquid phase on…

Q: Using the list of boiling points, which liquid would exhibit the highest vapor pressure at 100°…

A: Vapor pressure is the pressure of a vapor in thermodynamic equilibrium with its condensed phases in…

Q: 1. Has the ability to flow much faster than liquids: * A. SOLID B. LIQUID C. GAS 2. Which state of…

A: Answer Q=1 ability to flow much faster than liquids  Gaseous…

Q: observation question At any temperature where both substances are liquid, which has the higher vapor…

A: a) Given: enthalpy of vaporization of substance E is greater than that of substance F.

Q: An unknown liquid has a heat of vaporization of 8.48 KJ/mole. if the vapor pressure of this liquid…

A: Given data :  Heat of vaporization= 8.48 KJ/mol  P1= 106 torr , T1= -198°C  P2= 760 torr  To solve…

Q: QUESTION 26 Upload a picture (*.png, *.tiff, *.tif, *.pdf, *.jpg) of your hand-written work in…

A:

Q: An unknown liquid has a heat of vaporization of 8.34 kJ/mole. If the vapor pressure of this liquid…

A: An unknown liquid has a heat of vaporization of 8.34 kJ/mol. If the vapor pressure of this liquid at…

Q: ridium forms a face-centered cubic lattice, and an iridium atom has a radius of is 1.357 x 10-8 cm.…

A:

Q: Liquid A is known to have a higher vapor pressure and higher surface tension than Liquid B. Use…

A: Given:The surface tension of liquid A is higher than liquid BThe vapor pressure of Liquid A is…

Q: What point on the heating curve represents the boiling point of substance X? ___

A: A point is the zero degree Celsius and here the substance is freeze. Now as temperature increases…

Q: 1. What phase change is being observed when an ice turns to liquid? * a. Melting b. Evaporation c.…

A: Melting involve conversion of a solid to a liquid and sublimation involve conversion of a solid to a…

Q: A phase change graph is shown below. What is the condensation point for this substance?   A) 60°C B)…

A:

Q: 4.  Match the following physical change with the correct phase transition label.   Question…

A: The objective of the question is to match the given physical changes with the correct phase…

Q: A solid will melt to its liquid phase if enough heat is applied. O True 3 False

A: Solution- when enough heat is applied to solid it will change to liquid phase which is known as…

Q: 140 120 100 80 60 40 20 26 40 80 100 120 Time (min) Answer the following questions for the heating…

A: Letter a represents solid phase. Letter b represents solid <==> liquid equilibrium at 0°C.…

Q: 150 100- D 50- -50 Time The heating curve shown above shows what happens as heat is added to a piece…

A: The heating curve describes the change in phase of a compound with respect to heat given to the…

Q: Which of the following statements is FALSE regarding a substance undergoing a phase change? A. The…

A: We have to predict the incorrect statement regarding the phase change.

Q: A student synthesizes an impure compound whose melting point is known to be 143 degrees Celsius.…

A: Melting point of a substance is considered at that temperature at which a solid melts.

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A:

Q: 3-Explain the variations in slope of density with temperature observed in Figure5.1: a- starting…

A: Density is defined as mass per unit volume which means if volume increases density decreases and…

Q: Sublimation is which phase change?

A: Sublimation is change of solid phase to gaseous phase

Q: Use the observation in the first column to answer the question in the secc observation question At…

A: The enthalpy of vaporization is also known as the heat of evaporation or the heat of vaporization.…

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: Use the observation in the first column to answer the question in the second column. observation At…

A: Vapour pressure and boiling point of a liquid are inversely related. At a perticular temperature and…

Q: To melt a sample of ice cubes at 0 °C, the cubes must absorb 41.8 kJ of heat. What is the mass, in…

A: Given: Heat absorbed by ice = 41.8 kJ = 41.8×103 J (since 1 kJ = 103 J) Heat of fusion of water =…

Q: Imagine a substance with a melting point of -22°C and boiling point of 65°C. At a temperature of 243…

A: Melting point is the temperature at which solid state and liquid state are in equilibrium. That…

Q: What is the name of a phase change between a gas into a liquid?  a condensation  b evaporating  c…

A: When a gas change into a liquid,the phenomenon is  called condensation.

Q: You have two objects that are made of materials that have the same chemical composition, but…

A: As each and every material is made up of small particles. The internal ordered arrangement of these…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.