A stock solution is prepared by dissolving 4.137 g of (NH.)2SO4 in enough water to prepare 225.0 mL of solution. A 25.00 mL sample of this stock solution was added to 125.00 mL of distilled water. What is the molar concentration of ammonium ions and what is the molar concentration of sulfate ions in the final solution?

Q: c) Find the energy change, in joules, for a single hydrogen electron undergoing this transition. Put…

A: Given: Electron transition from n1 = 5 to n2 = 2 in a Hydrogen atom. Using Bohr's Model of atom, The…

Q: mass of Na2CO3 (grams) moles of Na2CO3 V final, volume dilute HCl at endpoint (mL) V initial, volume…

A: Molar mass of Na2CO3 = 105.99 g/mol  Required conversion factor is: 1 mol Na2CO3 = 105.99 g Na2CO3…

Q: Specify the concentration of I¯ needed to begin precipitation. Express your answer using two…

A: We have to find the concentration of I-  required to start precipitation

Q: Neutron Proton Electron Type here to search O The model in the illustration repr The model in the…

A: Question 1 - Cation Question 2 -  +1 ( one positive) electric charge

Q: Identify which of the following molecules can exhibit hydrogen bonding as a pure liquid. Check all…

A: Note: According to our guidelines we are supposed to answer only one question. Kindly repost other…

Q: Correct the ones that are marked wrong:

A: 1 (b)                                                     BaSO4(s) + HCl (aq) -----------> No…

Q: Which of these solutions are basic at 25 °C? Solution B: [H,0*] = 9.75 × 10-9 M %3D Solution C:…

A: Solution :            We can determine the nature of the solution on the basis of the concentration…

Q: d. ethylpropylamine + benzoyl chloride

A: Compounds containing a nitrogen atom bonded in a hydrocarbon framework are classified as amines.…

Q: Which of the following is true for a cofactor in enzyme activity? Select the single best answer. O A…

A: Enzymes are biomolecules formed by proteins and they act as catalysts in biological reactions. An…

Q: Calculate the theoretical yield in grams All, from the complete reaction of 18.3 grams Al according…

A: The balanced Chemical equation given in the question - 2Al(s) + 3I2(s) -----> 2AlI3(s) The…

Q: Identify the most important types of interparticle forces present in the solids of each of the…

A: There is always some sort of attraction between the particles(atoms,ions or molecules) of a…

Q: Make sure I can see subscript

A: The balanced molecular reaction given is, => Pb(ClO4)2 (aq) + K2S (aq) --------> PbS (s) + 2…

Q: A chemist prepares a solution of sodium chloride (NaCl) by measuring out 55.4 μmol of sodium…

A:

Q: Draw the Lewis Structure for the following ion: K+1 Be sure to use brackets and positive or negative…

A: Leiws structure are drawn by writing the symbol of the element or the ion. Then number of valance…

Q: Another name for an isotope is: Radion Heavy element Positron Transition element

A: Isotopes are compounds that have same atomic number but different mass number.

Q: If we locate an electron to within 20 pm, then what is the uncertainty in its speed?

A: As per Heisenberg's uncertainty principle, it is not possible to estimate the exact position or…

Q: ) Identify each of the following half-reactions as either an oxidation half-reaction or a reduction…

A: Given : We have to write complete balance redox reaction.

Q: Write the name: H20 Wotey 19. K2Cr2O7 Potassium dichromate 1. MgCl2 Magnesium Chloride N2 Nilrogen…

A: H2O water MgCl2 Magnesium chloride N2 Nitrogen CO2 Carbon dioxide CaCO3 Calcium carbonate…

Q: Write the condensed (noble-gas) electron configuration of ruthenium.

A: Write condensed electron configuration of Ruthenium ?

Q: Predict the products of this organic reaction: CH₂-CH₂-C-0-CH₂ -CH, + H2O Specifically, in the…

A: Esterification reaction:Carboxylic acid reacts with alcohol in the presence of an acid catalyst to…

Q: 4. You are placing the following quantities of BSA (1 µg/µL) in wells A1-A8 for a total volume of…

A: A table of data with mass and volume of BSA. Total volume and  corresponding Absorbance values.

Q: Option 1 was incorrect

A:

Q: Oxygen was produced and collected over water at 22 °C and a pressure of 754 mmHg from the following…

A: Total pressure = 754 mm Hg Pressure of water = 21 mm Hg Pressure of oxygen gas = P Total pressure =…

Q: I got this incorrect

A:

Q: of 75 mole % of copper and 25 mole percent of nickel. Which diagram best depicts the structure of…

A:

Q: 10. Calculate the hydrogen ion concentration in moles per liter for each of these solution: (a) a…

A: Hydrogen ion concentration is an important parameter of an aqueous solution. The concentration of…

Q: Turns red when heated (iron): Growth rate = 5 mm/d (grass): Makes coffee sweet (sugar): Floats in…

A: Physical change : It changes only appearance of a substance not the chemy composition. It is…

Q: Br E 2 chair Na OEt E2 transition state E2 Product 1. what is the chair conformation of the…

A: B. Given that, a reaction scheme is shown below We have to draw the chair form of the reactant, the…

Q: uld result for each pair and indicate I for Ensoluble, or S for soluble, or SS for slightly soluble.…

A: For Table 1a Here SS= sparingly soluble            I= insoluble            S= soluble

Q: KMnO4, NaOH cold Q

A: Given is organic reaction. In which reactant is 1-methylcyclohexene.This is dihydroxylation…

Q: gas storage cylinder in an ordinary chemical laboratory measures 2.3 cm wide and 9.2 cm high. This…

A:

Q: 1. Boiling point of the liquid is the temperature at which the liquid starts to change into a steam.…

A: We have to tell whether the given statements are true or false.

Q: 15-16. Predict the product of the given reaction (A): H₂C OH CH₂OH a) H₂SO4 OH H₂C+OCH₂ ОН b) OH…

A: We have been given an organic reaction and we have been asked to predict product of given reaction.…

Q: Molecular Geometry Report Sheet Problem Set 2: Please fill out the whole table Use the online…

A: We are given the Lewis diagram of the molecule and we have to find electron group, hybridization,…

Q: 16. 17. Calculate the cell potential for the following voltaic cell. Cr Cr³+(1.0 × 10² M) Co²+(1.0 ×…

A: Here we are required to find the cell potential of the given reaction.

Q: of ejected electrons as a function of the frequency of radiation hitting a metal surface. She…

A: Due to technical error ,unable to provide you the solution. Please resubmit the question once again

Q: & 2. Calculate the energy released, q, using the formula q = m C, AT Cp = 4.18J/gº Convert joules to…

A:

Q: 6. (1.33 x10^5) - (4.9 x 10^4) =

A: The values to be added or subtracted should have the same units or powers raise to base 10 value.…

Q: Can you please type it out? It's hard to read

A: Galvanic cell reaction:  Zn(s)+ Cu(NO3)2(aq) → Zn (NO3)2(aq) + Cu(s) Since in given cell reaction,…

Q: h ²d e ³a cid H

A: Organic reactions are those in which organic reactant react to form organic products. Pericyclic…

Q: 9. Indicate whether each of the following anions are typically soluble: In general, are nitrates…

A: The question is based on the concept of solubility.  solubility follows a basic principle "like…

Q: If you place 5.0 mg of NICO3 in 1.0 L of pure water, does all the salt dissolve before equilibrium…

A:

Q: 8. Cu + NO3- Cu2* + NO (in acidic solution) 9. Al + OH - AIO2 + H2 (in basic solution) 10. MnO4 +…

A:

Q: Why are van der Waals forces (London dispersion forces and dipole-dipole attractions) so important…

A: This problem is based on biochemistry. Here we will deal with protein structures. Proteins have…

Q: Fill in the left side of this equilibrium constant equation for the reaction of hydrofluoric acid…

A: Hydrofluoric acid and water We need to write the reaction between  Hydrofluoric acid and water and…

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.