Q1) Is this graph an endothermic or exothermic graph and why? Q2) Explain what is happening to the water molecules at segment D in detail.

Q: A. The polar covalent KCl is surrounded by the polar H,O to form an electrolyte solution which can…

A: Explanation given as follow

Q: Water

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

Q: When water boils, what are the bubbles composed of?

A: Boiling point can be defined as the temperature at which the vapor pressure of the liquid becomes…

Q: Draw a schematic diagram of water desalination process and explain.

A: Answer - Desalination - Desalination is a separation process used to reduce the dissolved salt…

Q: Which of the following is true about enthalpy changes when a salt dissolves in water? if the…

A: Enthalpy of the reaction changes when heat is absorbed or released from the reaction.

Q: calculate the mass of water that contains 10,000,000,000,000,000,000,000 molecules

A: Answer:- Firstly from the given number of water molecules, moles of water are calculated. then using…

Q: A student mixes some soap with water and then blows through a straw into the solution. Bubbles form.…

A: CHEMICAL CHANGE  Chemical change ids defined as the change in which the chemical composition of the…

Q: Ethanol is an alcohol found in drinks such as beer and wine. Examine this molecule. Are there any…

A: Chemical bond is attractive force that binds the ions or molecules together in a compound.Different…

Q: What percent of water is in the compound Magnese (ii) chloride tetrahydrate?

A: The formula of Magnese (ii) chloride tetrahydrate is MnCl2 x 4H2O Hence molar mass of Magnese (ii)…

Q: A bottle contains 59 mL of lemon extract solution. If the extract contains 49 mL of alcohol, what is…

A: Total Volume = 59ml  Volume of alcohol = 49ml

Q: What will be the number of moles of water in 1 L volume of water?

A: In this question, we have to find out the correct answer of given problem by the help of Mole…

Q: How are attractive forces related to the motion and the amount of kinetic energy of the particles?

A: Whenever the particles gain energy, they start to move. The energy possessed by the moving particles…

Q: Complete the row for CH3OH. Enter your answers numerically separated by a comma. ΑΣφ ? Moles of…

A: Given: For CH3OH: Mass of solute is 12.0 g Molarity of solution is 0.540 M   For MgSO4: Mass of…

Q: freezing

A:

Q: Which of the following is true about enthalpy changes when a salt dissolves in water? a) if the…

A: To solve this problem we have to know about the enthalpy change of resulting solution made by…

Q: Which will have a higher boiling temperature, a mixture containing more water or a mixture…

A: The boiling point of a fluid is the temperature at which the vapor pressure of a liquid equals the…

Q: Potassium hydroxide (KOH), glucose and methylene blue are added together in a test tube. Why did we…

A: in laboratory there are several techniques are used to mix the solutions. When we are using 3…

Q: Substances like sodium chloride that (A) in water and conduct an (B) are called (C). Substances like…

A: Electrolyte is defined as a substance that dissociates into ions when present in a solution whereas…

Q: Determine the percent water in CuSO4∙5H2O to three significant figures.

A:

Q: What percent of water is in the  compound barium chloride dihydrate?

A: To Calculate: Percent of water is in the  compound barium chloride dihydrate.

Q: The slight negative charge at one end of one water molecule is attracted to the slight positive…

A: As we know opposite charge attracts each other .  So the type of bonding shown is given in…

Q: What is the mulecular formula of water?

A: Molecular formula is the chemical representation of an element and it will give the exact number of…

Q: d. What is the final molarity of HCI? If the two gaseous products are collected separately, then…

A: The solutions are given below -

Q: Get the Moles of the condensed vapor recovered ( liquid)

A: Here given that, Your Data table : Pressure = 0.9973 atm , T = 370.45 K , V= 0.287 L  Lab partners…

Q: Water molecules increase and decrease global warming. Explain

A: Introduction: Global warming is the increase in the average temperature of earth's near surface area…

Q: What happens to ice when sugar and ice are added, respectively?

A: Here we will apply the colligative properties of solute in a solvent.

Q: What is the percent of water in Na2SO4 10H₂O?

A: Solution  The %H2O in Na2SO4.10H2O is 55.9%

Q: diagram

A: Bonding shown in the diagram is an example of metallic bonding. Metallic bonding is a chemical bond…

Q: The slight negative charge at one end of one water molecule is attracted to the slight positive…

A: The attractive force that is mainly responsible for binding H atom of single molecule with…

Q: How much water is in the chemical compound magnesium sulfate heptahydrate?

A: The formula of magnesium sulfate heptahydrate is MgSO4 x 7 H2O  Hence the molar mass of magnesium…

Q: Which of these substance would expect to be able insoluble in water?

A: Polar and ionic compounds are soluble in water.

Q: If a solution is made by taking 40 mL of ethanol and adding enough water to make 240 mL of solution,…

A: Given : volume of ethanol = 40 mL             Volume of solution = 240 mL  To determine : percent by…

Q: 3 example problems with solution about TEMPERATURE AND HEAT.

A: The formula of temperature and heat is, Where, Q = heat released m = mass of an object c = specific…

Q: What is the number of moles in 18 gram of water?

A:

Q: Calculate each of the following for the hydrated 'compound':           Mg5Al4(P3Se7)3⋅⋅6H2O How…

A: Atomicity is defined as total number of atoms present in 1 molecule of compound.

Q: When iron(III) nitrate dissolves in water, what ion is attracted to the oxygen atom of the water…

A:

Q: Based on this. What was the percentage by mass of water in the sample?

A: Given sample is = MgSO4·7H2OMolar mass of  MgSO4·7H2OMgSO4·7H2O =  24 + 32 + 16×4 + 72+16…

Q: which of the following best illustrates a water molecule?

A: H2O is a polar molecule

Q: What will be the number of moles present in 1 L volume of water?

A:

Q: When rain water interacts with atmospheric carbon dioxide, it produces what?

A: When rain water interacts with atmospheric carbon dioxide, it produces what?  Product is given…

Q: What percent of water is in the compound calcium sulfate dihydrate?

A: The formula of calcium sulfate dihydrate is CaSO4 x 2H2O Hence the molar mass of calcium sulfate…

Q: what is the mass of a hydrated salt?

A: Hydrated salt: It is an ionic compound in which a number of water molecules are attracted by the…

Q: When salt (sodium chloride) is placed in water, what happens to the molecules?

A: Sodium chloride is an ionic compound that contains Na+ and Cl- ions.

Q: 3. Of these, which combination of elements do we think would make a compound most similar to water…

A: Water has a unique property  of hydrogen bonding due to which it is accepted  as universal solvent .…

Q: How much water would 29.21 grams of an insoluble sample with a density of 4.35 g/mL displace ?

A: Given information: Density is 4.35 g/mL Mass is 29.21 grams

Q: you dissolve sugar in water and then try to run an electric current through it, what will happen? *…

A: An electrolyte is the substance that breaks up into ions when dissolved in water. A non electrolyte…

Q: Illustrate through a drawing what happens at the molecular leve

A: When an ionic salt dissolves in water or some other polar solvent, ionic bonds are breaks and it…

Q: Sketch a diagram of a water molecule and indicate the ends that bear partial positive and negative…

A: If two charges are taken that are equal and opposite in nature and are separated and kept at a…