- How much heat does your body lose when 2.8 g of sweat evaporates from your skin at 25 °C? (Assume that the sweat is only water.)

Q: C) Below is a phase diagram of water. P (atm) A. B Triple Point T°C C a) Label the phases that are…

A:

Q: Energy to sublime K(s) = 89.0 kJ/mol %3D Electron affinity of F(g) = -328.0 kJ/mol First ionization…

A: A numerical problem based on Lattice energy, which is to be accomplished.

Q: Hot apple cider is often flavored with cloves, giving the beverage a distinctive aroma. One of the…

A: Given:

Q: You have learned that adding table salt, NaCl (58.44 g/mol, 2.16 g/cm3), to water (Kb = 0.52°C/m)…

A: Boiling point elevation refers to the increase in the boiling point of a solvent upon the addition…

Q: Determine the lattice energy of NaCl(s), using the data provided.

A: This question can be solved using the Born-Haber cycle equation. Given, Sublimation energy = 109.0…

Q: Calculate the freezing point and normal boil point of  24 mL of ethanol, C2H5OH ( d= 0.780g/mL), in…

A: In this question, we want to determine the freezing point and boiling point of the Solution.  You…

Q: In preparation for a recipe, a baker dissolves 36 g of sugar (C12H22O11, GFM = 342 g/mol) in 250 g…

A:

Q: What mass of H20 could be frozen 1. at 0 C, when 145 g of NH3 is vaporized? The heat of fusion of…

A: Answer:Here:

Q: Consider the following data:   Lattice Energy   CaCl2(s) –2247 kJ/mol –46 kJ/mol CaI2(s) –2059…

A:

Q: In preparation for a recipe, a baker dissolves 36 g of sugar (C12H22O11, GFM = 342 g/mol) in 250 g…

A: This quetion is based on relative lowering of vapour pressure.

Q: You and your friend are sitting around a campfire and he notices that the ashes that are left after…

A: Concept based on the law of conservation of mass.

Q: water, describe the role of hydrogen bonding. Describe 3 different properties of water related to…

A: Hydrogen bonding in water is cause of dimerization in  It from bond with alcohol so stablity if…

Q: What is the boiling point of a 2.6 m sucrose solution in ethanol? Kb(ethanol) = 1.22 °C/m and the…

A: colligative property are those property which depend on the number of particle of the solute

Q: 3. Methanol (CH;OH) has an enthalpy of fusion AHfus = 3.17 kJ/mol and a freezing point of -97.6 °C.…

A: The enthalpy of fusion is the enthalpy change resulting from the conversion of a solid to a liquid.…

Q: What substance(s) make up the bubbles observed when liquid water boils? H₂O(g) O air O H₂O(l) O H₂ &…

A: A question based on properties of liquids that is to be accomplished.

Q: a) Explain how the surface tension of a liquid arises? b) Does surface tension have anything to do…

A: Surface tension is a physical property of liquids that describes the force that exists at the…

Q: HHH H-C-C-C=0 В. BH H HHH H H-C-C-C-C A. H H H HHHH H-C-C-C-C-H C. H H H H CI F H Н H-C-C- -C-H

A: Vapor pressure is the pressure exerted by a vapor in equilibrium. The intermolecular force of…

Q: How much energy must be removed from a 92.5 g sample of benzene (M = 78.11 g/mol) at 325 K to freeze…

A: The energy removed is calculated as follows

Q: 200 grams of MgCl2 are added to 1 L of liquid water at standard conditions. a) Calculate the…

A: eople who live in colder climates have seen the trucks put salt on the roads when snow or ice is…

Q: Automotive antifreeze is a mixture of mostly ethylene glycol (C2H6 O2) and water. What mass percent…

A:

Q: Which will have a greater vapor pressure methyl Amine (CH3NH2) or chloroform (CHCl3)? (briefly…

A:

Q: For inorganic solid compounds, solubility in water is     usually increased by an increase in…

A: Given, for inorganic solid compound, solublity in water is-

Q: Assume ideal behavior Which has highest boiling point and which is lowest A - 2.0M C12H22O11 B -…

A: The elevation in boiling point of any solution is given by  elevation in boiling point = i X Kb X m…

Q: 4. Sample A contains 100 mL of methanol (CH3OH) and Sample B contains 100 mL of benzene (C6H6). Both…

A: The Antoine equation is a thermodynamic model that can be used to calculate the vapor pressure of a…

Q: 6. Describe the difference between the hydrogen bond between two water molecules (intermolecular…

A: The forces which provide interaction including force of repulsion and attraction acting between the…

Q: Which organic liquid, ethanol or methanol, exhibited the largest vapor pressure? Explain this in…

A: Vapor pressure : The vapor pressure of a substance is defined as the pressure at which a gaseous…

Q: The boiling point of liquid A is 75.5 °C at 1 atm (760.0 torr). Its vapor pressure at 15.5 °C is 165…

A: Given,The boiling point of a liquid at 1 atm ( 760 torr ) = 75.5 oCThe vapor pressure of liquid at…

Q: The vapor pressure of methanol (CH₃OH) at 25°C is 127.2 torr. A 6.25-g sample of methanol is placed…

A: Mass of Methanol (m) = 0.658 g

Q: Calculate the boiling point for 0.41 mol ethylene glycol and 0.18 mol KBr in 128 g H₂O.

A: Answer: When a non-volatile solute is added in the water, it causes an elevation in its boiling…

Q: Give a complete definition for each of the following enthalpy changes. In each case, please include…

A: Enthalpy change is defined as amount of heat absorbed or released by the process under constant…

Q: Which of the following is NOT a standard reaction of formation at room temperature? ON₂ (g) + O2(g)…

A: Two questions based on properties of gas. A question based on the temperature of formation of gas…

Q: Using the heat of fusion of acetic acid, 192 J/g, calculate the grams of acetic acid that will…

A: Given that  The heat of fusion of acetic acid, ∆Hfusion = 192 J/g, The amount of acetic acid in…

Q: Strength of IMF Practice 1. You can fit 25 drops of substance X on a penny and 12 drops of substance…

A: Find  the solution below

Q: What is the vapor pressure of water at 10 degree Celsius, at 25 degree Celsius And at 60 degrees…

A: Vapor pressure of water is the pressure at which the condensed state of water and water vapor are in…

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.