What is the importance of cold packs?

Q: Activity 2: Table Completion Properties Solids Liquids Gases Distance between particles Molecular…

A: We have some properties of physical states of matter.

Q: When 8.7 grams of oxygen gas reacts with excess hydrogen gas in an experiment, 2 grams of water are…

A: Hydrogen reacts with oxygen to form water. The equation for the balanced chemical reaction is as…

Q: The Tl in a 9.76-g sample of rodenticide was oxidized to the trivalent state and treated with an…

A: In the reaction, all of the 1 Tl3+(aq) is converted to 1 TlY-(aq) and 1 Mg2+(aq). Hence the moles of…

Q: Review method used to increase the solubility of a drug under the following headings co solvents PH…

A: Various methods are used to enhance solubility of poorly soluble drug like physical and chemical…

Q: At 25 °C the reaction from Part A has a composition as shown in the table below. Pressure Substance…

A: Here temp and volume is kept const,so partial pressure is mone fraction and total pressure is no of…

Q: What is the equilibrium constant K for a redox reaction that has E°cell = 1.98 V at 25°C ? Assume 1…

A:

Q: One milliliter of sodium hydroxide reacts with 40.84mg KHP (KHC8H4O4). What is the molar…

A: Molarity (M) :-  The number of moles of solute dissolved in one litre of solution is known as…

Q: What is the arrow pushing mechanism for a Wagner-Meerwein rearrangement of Camphene?

A: In Wagner meerwein rearrangement carbocation intermediate is formed.

Q: A 0.5000 g sample containing NaCl (58.44 g/mol), BaCl2 (208.23 g/mol), and 11.56% by mass of…

A: Given :  Mass of sample = 0.500 gm  % of impunity = 11.56 %  Mass of AgCl obtained = 0.7364 gm

Q: Answer whether it is true and false. Please provide the explanation. Thank you Ma'am/Sir!1  1.…

A: 1. Carbohydrates are polyhydroxyl ketone/aldehyde is because they have a lot of hydroxyls (-OH) in…

Q: A 5.0 L sample argon gas at 15.0 C was cooled until it occupies a volume of 0.85 L. What is the new…

A:

Q: A mother liquor of a NaCl solution having a concentration of 5.00 M is taken two milliliters (2.00…

A: A 2.0 mL aliquot of 5.0 M NaC solution is taken out and diluted to a volume of 10.00 mL. We are…

Q: 7 Explain what will happen to the magnitude of the repulsive force between 2 colloidal particles as…

A:

Q: Consider the following reaction where Kc = 10.5 at 350 K: 2 CH2CI2 (g) CH4 (g) + CCI4 (g) A reaction…

A: GIVEN:-

Q: Draw the starting material that would efficiently generate the product shown. (CHa),CCI AICI,

A: For given reaction product  Startingcompound is isobutyl Benzene

Q: What is the standard potential (E°) for the reaction below? Use the standard potentials in the Data…

A: Cathode :-  The electrode at which reduction reaction takes place is known as cathode Anode :-  The…

Q: In element form, antimony (Sb) and bismuth (Bi) are both brittle, crystalline solids at room…

A: Sb,Bi both are brittle,crystalline solids are room temperature  and poor conductor of electricity.

Q: True or False: When performing calculations with dilute aqueous solutions (< 1% or 0.2 M), you can…

A:

Q: At a given temperature, for which of these gases: H2(g); O2(g) is: a) the average speed less? b) the…

A: Given, H2 and O2 gas

Q: 13. Description: “A dry porous mass of yellowish or yellowish-green color with a peculiar smell.…

A: A question based on general chemistry that is to be accomplished.

Q: Which of the following five diagrams correctly represents the structure of BrCl4*?

A: Option C is correct answer

Q: A sample of gas with volume 21.4 mL at STP is expanded to a pressure of 0.98 mmHg at a temperature…

A: Given :-  initial volume at STP = 21.4 mL final pressure = 0.98 mm Hg final temperature = 24°C  To…

Q: In using ATR-FTIR, liquid samples need no additional pressure because it is always in optimal…

A: True

Q: The chlorination of methane occurs in a number of steps that results in the formation of…

A: Answer: This question is based on ideal gas equation which is shown below: PV=nRTP=nRTV Here:…

Q: Construct the expression for Kb for the weak base, N2H4. N2H4(aq) + H2O(10) = OH"(aq) + N2H;*(aq) 1…

A: Given reaction, N2H4(aq) + H2O(l)  ⇌ OH-(aq) + N2H5+(aq)

Q: The molar solubility of magnesium phosphate is 9.8 × 10–6 M.  What is Ksp for this compound?

A:

Q: Consider the reaction 2CO2(g) + 5H2(g)C2H2(g) + 4H2O(g) Using the standard thermodynamic data in…

A: Given,  Chemical reaction,  2CO2(g) + 5H2(g) -------&gt; C2H2(g) + 4H2O(g)  pressure of each gas is…

Q: If a process releases 4.20 kJ into a coffee cup calorimeter containing 150. g of a solution and the…

A:

Q: Die standaard verbrandingsentalpie van sikloheksaan (C6H12,1) is -3920 kJ.mol1 by 25 °C. Gebruik…

A:

Q: An arctic weather balloon is filled with 48.1 L of helium gas inside a prep shed. The temperature…

A:

Q: What is E°cell (in V) for a redox reaction that has ΔrG° = 300 kJ mol-1 at 25°C ? Assume 2 electrons…

A:

Q: A generalized, unbalanced chemical equation for the synthesis of a compound is given below. A + BC…

A: Limiting reagent is the reagent which controls the reaction. When the amount of limiting reagent…

Q: What is the concentration in %m/v of a 0.607 M aqueous solution of dimethyl ether (MM = 46.07…

A: In multiple questions, we solve only first questio according to the Bartleby guideline. Find out…

Q: NaOH/H,0 -NCI 4. O C

A: Given,

Q: Label on a strong acid/strong base titration curve where pH=pKa. Is there a buffer region on a this…

A: Strong acid and strong bases dissociates Completely. So in this curve at end point neutralisation…

Q: Consider the reaction between hydrazine and hydrogen to produce ammonia,…

A: Enthalpy change when 1 mole of a compound is formed from its elements is known as Enthalpy of…

Q: A buffer solution contains 0.336 M CH3NH3Br and 0.344 M CH3NH2 (methylamine). Determine the pH…

A:

Q: When the organic fuel C2H4O combusts the balanced chemical reaction (with lowest whole number…

A: Enthalpy  of combustion is defined for 1 mole substance

Q: _15. As the temperature of a reaction is increased, the rate of the reaction increases beçause the…

A: Option B is correct answer.

Q: 6.61 From these data, S(rhombic) + O2(g) SO-(g) AHn = -296.06 kJ/mol %3D S(monoclinic) + 0,(g) –→…

A:

Q: The photons of incident light can cause electrons from metals to be released and is known as the…

A: Given that, the minimum frequency for the emission of photo-electrons from sodium is 43.9 x 1013 Hz.…

Q: 1. What volume of a 0.500M HCl reacted with enough Zn metal to produce 1.50g ZnCl2 based on the…

A:

Q: QUESTION 7 For which of these gases might the van der Waal's factor 'a' be largest: H2(g); H20(g);…

A: Van der Waals factor a is highest for H2O(g).

Q: Consider the reaction CO(g) + Cl2(g)COCl2(g) Use the standard thermodynamic data in the tables…

A:

Q: Aqueous FeCl3 and zinc will react according to the equation: 2 FeCl3 (aq) + 3 Zn (s) --> 2 Fe (s) +…

A: Given :-  2 FeCl3(aq) + 3Zn(s)--&gt;2Fe(s) + 3ZnCl2 (aq)  no.of moles of FeCl3 = 15 mol  To…

Q: If the molar composition of dry air is 78% N2, 21% O2 and 1% Ar, calculate the partial pressure of…

A:

Q: Consider the following reversible processes: XY (s) = x* (aq) + Y" (aq) Ksp1 = 0.25 CD2 (s) c2+ (aq)…

A: Given that, two reversible processes are XYs↔X+aq+Y-aq                     Ksp1=0.25CD2s↔C2+aq+2D-aq…

Q: The equilibrium constant, Ko, for the following reaction is 2.44×10-2 at 596 K. NHẠCI(s) ? NH3(g) +…

A: The value of Kc depends on Stoichiometry of the reaction. *If a chemical equation is reversed then…

Q: Incorrect Which expression shows how the cell voltage depends on [Ag+? E = [0.799 – 0.05916 log…

A: Cell potential  ECell = Ecathode - Eanode       = Ereduction - Eoxidation  Where Ecathode and Eanode…

Q: b Calculate PSCN if a cell consisting of a saturated calomel reference electrode ( E° = 0.244 V) and…

A: A the EMF of a cell which consists of calomel electrode and a silver indicator electrode is given to…

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.