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Q: show complete solution and express in significant figures

A: To calculate, the amount of heat released or absorbed for a process, the equation used is: q=m×C×(T2...

Q: need explanation steps and definition

A: The given data contains, Molarity M1  = 0.20 M. Volume V1 = 22.5 ml. Volume V2 = 100 ml.

Q: Determine the molar solubility for Cr(OH)3 (Ksp 6.3 x 10-³1). %3D

A:

Q: Tartaric acid occurs in crystalline residues found in wine vats. It is used in baking powders and as...

A: The mathematical relation between freezing point depression and molality of a solution is given as f...

Q: Draw a Lewis dot diagram for the bicarbonate anion. Does this anion have resonance structures? If so...

A: Bicarbonate anion (HCO3-) NaHCO3- sodium bicarbonate  Conjugate acid is carbonic acid(H2CO3)

Q: If zinc is added to Nickelic Sulfate, what is the product? If salt is reacted to a base, what will h...

A: The reaction in which one element replaces other element of the reactant molecule or compound is ter...

Q: all one question :)

A: EoCu2+ / Cu = + 0.34 V EoZn2+ / Zn = - 0.76 V We need to find the standard cell potential for given ...

Q: Answers should be in 4th decimal places A solution is made by dissolving 0.100 mole of NaCl in 8.60 ...

A: Solution is made up of two components which are solute and solvent. Solute is present in the smaller...

Q: Answer letter D. only

A: The voltaic cell is generally used to produce the energy i.e., electrical energy. It contains the el...

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 7....

A:

Q: How would you prepare the following aqueous solutions?(a) 1.50 kg of 0.0355 m ethanol (C2H5OH) from ...

A: First step is to calculate the total mass of solution: Total mass of solution = mass of solute+mass ...

Q: answer all

A: Any element of the symbol  xAy the number of protons and electrons is the same as the atomic number ...

Q: Write the condensed structural or line-angle of the product(s)for each of the following reactions. (...

A: Hi, since you have posted question that has multiple subparts. We will answer the first three subpar...

Q: Eto EVDH 2lexcess H0 Ht A DEt (etniog St) exess Hyo tuo organic products Ht A

A: In organic chemistry, several reactions take place in functional groups. The types of reactions are:...

Q: Calculate the amount of heat (in kilojoules) required to convert 28.00 g of water to steam at 100 ° ...

A:

Q: If the pOH of a solution is 4.21, what is its pH?

A: pOH:- It is generally defined as the measure of hydroxide ion concentration in a solution. It is usu...

Q: Chemistry Question

A:

Q: Question is in the picture. The "There concentration of productions" in options I. and II. should be...

A: For a reversible reaction if K<<1; then following statements are true:

Q: The volumes of standard solution needed to reach the end point and the equivalence point are always ...

A: 1)  Equivalence point :-  A point of the equivalce in the titration indicates the point at which the...

Q: For each of the molecules below, provide one reasonable carbon-carbon bond breaking/ forming transfo...

A: Retrosynthesis is defined as imaginary cleavage of molecule into simpler materials. The target will ...

Q: Could you please explain 3

A: Molarity is defined as number of moles of Solute i.e.  sodium Hydroxide Dissolved in per litre of so...

Q: Give answer all questions with explanation

A: When the molecules of different monomers or same monomers are added together to form a polymer on la...

Q: A 54-woman eats a 450 Calorie hamburger for snacks. How many joules of energy is the equivalent of o...

A: Energy is the capacity to do work. There are different units to measure energy. They are measured in...

Q: Calculate the molecules of oxygen required to react with 38.8 g of sulfur in the reaction below. 2S(...

A: Given, Amount of sulfur = 38.8 g Formula Used, Moles(n)=Given MassMolar Mass 1 mol has 6.023 x 1023 ...

Q: 5. What is the AH of the reaction 2KS+ 2K 2K2S? K+S KS AH = +32.5 kJ %3D KS K K2S AH = +38.2 kJ O +6...

A:

Q: Why is the lattice energy defined as breaking bonds in an ionic solid rather than forming bonds?

A: The reason for the lattice energy defined as breaking bonds in an ionic solid rather than forming bo...

Q: Write the reaction rate equation and identify the order of reaction for the following equations: a. ...

A: Rate of a chemical reaction is defined as the speed with which the reaction proceeds. It determines ...

Q: Choose the particle having a relative mass of 0 amu and a charge of +1. Group of answer choices alp...

A: Answer 

Q: 6

A: Given that, the wavelength of the photon, λ = 313 nm = 313 * 10-9 m  (As, 1 nm = 10-9 m) Planck's co...

Q: True or Flase ✅❌؟؟؟ . 1- The molar masses of all the elements are equal . 2- According to the rules...

A: (1.)  The molar masses of all the elements are equal .  [False]  (2.)  According to the rules for na...

Q: QUESTION 8 For the given unbalanced reaction, H2SO4 + NaOH → Na2SO4 + H2O It requires 35 mL of H2SO4...

A: The balanced eqn is given by – H2SO4 + 2 NaOH → Na2SO4 + 2 H₂O M1V1/ n1 = M2 V2 / n2 Note : Where n1...

Q: All changes saved 9. Answer the question below. Use the rubric in the materials for help if needed. ...

A: According to 1st law of thermodynamics,  energy is transformed from one form to another .  According...

Q: A solution is prepared by dissolving 4.00 g of NaOH in 100.00 g of water. The volume of the resultin...

A: Given: The amount of NaOH taken, mNaOH = 4.00 g The amount of water taken, mwater = 100.0 g = 0.1 kg...

Q: define osmolarity and tonicity and explain theirimportance

A: Solute is the substance which is dissolved in the solvent. It is a small component of the solution. ...

Q: 14. Which type of energy is not considered an evolving source of energy? wind biogas ethanol O nucle...

A: Interpretation -  To tell about which type of energy is not considered an evolving source of energy ...

Q: Which of the following descriptions is true for the cell below? Cu (s) | Cu²+ (o.1 M) || Fe3+ (o.5 M...

A:

Q: Determine the molar solubility for Cr(OH)3 (Ksp = 6.3 x 10-31). 1 2 3 Based on the given values, set...

A: The solubility product of salt is a constant at a given temperature irrespective of the source from ...

Q: Chemistry

A: Generally there are three type of reactions takes place, 1.)   Addition reaction 2.)  Elemination 3....

Q: 2. Review relevant class materials and answer the following questions: You are given a solution that...

A:

Q: why is it necessary to follow the steps in calculating the empirical formula from the percent compos...

A: The empirical formula is the representation of the simplest mole ratio of each atom in the compound ...

Q: What mass of water is needed to dissolve 292.5 g of NaCl to produce a 0.25 m (molal) aqueous solutio...

A:

Q: Assume household vinegar contains 5% acetic acid by weight and that the density of vinegar is the sa...

A: Given: Density of vinegar = 1g/mL w/w concentration of acetic acid = 5% Mass of sodium bicarbonate =...

Q: List all orbitals from 1s through 5s according to increasingenergy for multi-electron atoms.

A: For multi-electron atoms, the orbitals have to listed from 1s through 5s based on increasing order o...

Q: How old is a rock if the mineral biotite from the rock has 25,000 40K atoms and 75, 000 40Ar atoms? ...

A: Every atoms of Ar produce from k. Answer 2.6 days

Q: QUESTION 31 If the [OH−] of a solution is 4.6 × 10−2, what is its pH?  Report your answer to 2 ...

A: Given data, [OH−] = 4.6 × 10−2,  To calculate the pH. Report your answer to 2 significant figures

Q: I forgot how I got to this answer. Can you please show me how?

A: The given chemical reaction as follows --- Fe3O4 (s)   +   4 CO (g)   →   3 Fe (l)   +   4 CO2 (g)  ...

Q: What is the pH of a 0.035 M NaOH solution?

A: Given  Molarity of NaOH  = 0.035              PH  = ?

Q: A gas mixture contains O2, N2, and Ar at partial pressures of 125, 175, and 225 mm Hg, respectively....

A: Given details, At partial pressures, P(O2)=125 mm HgP(N2)=175 mm HgP(Ar)=225 mm Hg Then, the total p...

Q: blue

A: When Bismuth is burn in the presence of oxygen then it color bule flame.

Q: 3. Which of the following compound are form when boron trichloride is treated with water? НЗВОЗ + Hа...

A: Answer - According to the question - When boron trichloride is treated with water - formula of boron...