NaCl is dissolved in water, the temperature of the water slightly decreases. Use this fact to  explain why the salt NH4NO3 is used for instant cold packs.

Q: (Q60) One iron (III) cation can form a complex with a total of six thiocyanate (SCN-) anions. Which…

A: given :- one iron (iii) cation can form complex with 6 SCN- anions  to write :- formula of complex

Q: What is the frequency of an IR photon with a wavelength of 1.2 X 10 -3 cm? c = 3.00 X 108 m/s. O a.…

A: • The values provided in the question are:-      i) Wavelength of an IR photon, λ = 1.2 × 10-3 cm =…

Q: Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation is S, (g)+C(s) =…

A: The reaction given is, => S2 (g) + C (s) ↔ CS2 (g)                            Kc = 9.40  Given:…

Q: How many moles is 4.22x1025 particles? O 7.01 582 O 3.06 70.1 3.06x1048 O 5.82

A: Given that, Number of particles = 4.22×1025 particles number of moles = ?

Q: (a) Calculate the percent ionization of 0.00550 M butanoic acid (K, = 1.5e-05). % ionization (b)…

A: a) Given: Concentration of butanoic acid (Assuming HA) = 0.00550 M

Q: #17. arrange the following pure solid elements in order of increasing electrical conductivity.

A: The electrical conductivity is determined by the ease with which the electric current can be passed…

Q: Identify the MO diagram for N,. N, valence e-: diagram A diagram B Identify the MO diagram for O,.…

A: Given ; mo diagram

Q: 2) Provide the major organic product(s) for each of the following reactions. You may ignore drawing…

A: a. Stork enamine reaction. b. Michael addition c. Intramolecular acyl substitution. d. Michael…

Q: Match each reaction/phrase with the correct product/answer. Isobutyl alcohol and warm, basic KMNO4…

A:

Q: Use the bond energies provided to estimate ΔH°rxn for the reaction below. CH4(g) + 4 Cl2(g) →…

A:

Q: Question 13 The nickel-cadmium battery (NiCd battery or NiCad battery) is a type of rechargeable…

A:

Q: Write the hydrolysis reaction for aluminum nitrate in the ionic and molecular forms and notice the…

A:

Q: in which the system will shift in esponse to the following stresses. FO(g) + 3H2(g) - CH4(g) +…

A:

Q: Which solution is most likely to result in a solution with a neutral pH? O a. Zn(NO3)2(aq) O b.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: (c) The magnitudes but not the signs of the standard electrode potentials of two metals, X and Y…

A: In this given question we have to find out standard emf of a cell made up of X and Y metal. When X…

Q: (c) (c) The magnitudes but not the signs of the standard electrode potentials of two metals, X and Y…

A: Given half-cell reactions are X2+  + 2e- →X;  E0 = 0.25  V  Y2+ + 2e-  → Y; E0 = 0.34  V Also given…

Q: A 0.945 M solution of a weak acid HA, is 4.50% ionized. What is the pH of the solution?

A:

Q: Complete the table by simply identifying only one example in each type of carbohydrate.…

A: Below are the types-

Q: Consider the reaction. A(aq) = 2 B(aq) K. = 7.82 × 10-6 at 500 K If a 3.50 M sample of A is heated…

A:

Q: 17.2 g of Na3PO4 is dissolved in 2.10 L of water. What is the number of ions per mL in the solution?

A:

Q: Cr207 2- (aq) + NO2 - (aq) → Cr 3+ (aq) + NO3 - (aq) The unbalanced equation for an…

A: Detail description is given below

Q: Consider the hypothetical reaction: A +B product Determine the unit of the rate constant, k, using…

A:

Q: Any chemical or physical change that absorbs energy O is an endothermic process. O is an exothermic…

A:

Q: ny g is equivalent to 1500 µg?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The ?sp of cadmium carbonate, CdCO3, is 1.0×10^−12 Calculate the molar solubility, ?, of this…

A:

Q: 4. (a) If we have an enzyme solution whose concentration is 1.0 x 10“ M and with a keat value of…

A: We can solve this problem by using the Michaelis-Menten equation  Vo= (Vmax × [S])/(Vm+[S]) Vo =…

Q: Complete and balance the following redox reaction in acidic solution H2O2(aq) + Cr2O;² (aq) → O2(g)…

A:

Q: (Q54) Nickel iodate, Ni(IO3)2 is being precipitated out of a 1.00 L solution. If the concentration…

A: Given that,  Nickel iodate, Ni(IO3)2 is precipitated Concentration of disdolved Ni2+ ion , [Ni2+] =…

Q: what quantity in moles of Nal are there in 175.0 ml of 0.270M Nal

A:

Q: CuBr (s) Cu+ (aq) + Br- (aq) ; Ksp = 6.3 * 10^-9 what is the molar solubility?

A: Given, CuBr(s) <--> Cu+(aq) + Br-(aq) The solubility product constant (Ksp) = 6.3 × 10-9 Molar…

Q: शिकाल्ब गन वेगण्णंणंद भएवपत्कोल- ०रावळीना जबवतीक व ए्रवकाट ेतपनीब्ल. ब्बकण केवोरी जटवत्वीनाह ल…

A: Balanced the following redox reaction under basic conditions ---

Q: Predict the product and provide a complete mechanism for the following overall transformation.…

A:

Q: Determine the number of moles of cesium in 50.0 g of cesium.

A:

Q: Choose the most appropriate reagent(s) for conversion of ethyl acetate to acetamide. H OEt OCH2CH3 H…

A:

Q: expression that relates total pressure of gas to the total kinetic energy of an Derive an ensemble…

A: The pressure of a gas is equal to the total kinetic energy of the molecules in a unit volume of the…

Q: Consider the following system at equilibrium. A(aq) = B(aq) AH = +650 kJ/mol What can be said about…

A: The above reaction is an endothermic reaction.  According to Le-chatelier's principle when there is…

Q: How many moles are in a 331.839 g sample of an element with a molar mass of 178.68 g/ mole?

A:

Q: Question 5 of 21 Consider the reversible reaction A(g) B(g) Which K values would indicate that there…

A: 5) here option c and d is answer

Q: Phosphorus pentachloride decomposes according to the chemical equation PCI, (g) = PCI, (g) + Cl, (g)…

A:

Q: On a piece of paper, with a pen, write a complete, step-by-step mechanism for the 1,4-addition of…

A:

Q: 1. NaOMe Ph d. 2. Heat 1. HNME,, H 2. Ph. CI 3. H;O* Bra, ACOH f. Ph 1. NaOMe 2. H,0* Ph 1. NaOMe 2.…

A:

Q: The activation barrier for a reaction is 77.0 kJ/mol. If an enzyme increases the rate of the…

A: Arrhenius equation is given by,  k = A.e-Ea/RT    k = rate of reaction  A = Arrhenius constant  Ea…

Q: Step 3: Each successive approximation uses the value from the previous approximation. 7.90 x 10-5 =…

A:

Q: The enthalpy change of some reactions cannot be determined directly from calorimetric data and are…

A: Hess's law says that enthalpy change of any reaction is a fixed quantity and is independent of the…

Q: Balance the following equation and list the coefficients in order from left to right. SF4 + H20 → _…

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: What quantity in moles of Kbr are there in 46.3ml of 0.150M KBr?

A: We have to predict the moles of Salt.

Q: Ground-state atoms of metals absorb light at extremely particular wavelengths matching to the energy…

A: Ground-state atoms of metals absorb light at extremely particular wavelengths matching to the energy…

Q: Which of the following substances is likely to have the highest entropy? Link to Physical Constants…

A: The substances given are He, H2, CO2, N2 and H2O (l).

Q: 1. Classify the following compounds as constitutional isomers, conformations, enantiomers,…

A: Answer : 1) meso compound   2) Enantiomers   3) conformation isomers   4) constitutional isomers…

Q: Consider the decomposition of KCIO3 at high temperature: 2KCIO3(s) → 2KCI(s) + 302(9) If 0.205 mol…

A: Given :-  2KClO3(s) → 2KCl(s) + 3O2(g)  No.of moles of KClO3 = 0.205 mol  Temperature = 485°C…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.