50.00 mL of a water sample is diluted with 150.00mL deionized water. The diluted sample has a lead content of 17.8 ppb. What us the led content (in ppb) of the original sample?

Q: Methane (CH,) gas and oxygen (0,) gas react to form carbon dioxide (Co,) gas and water (H,O) vapor. ...

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Q: Predict the chemical formula for the ionic compound formed by the elements Ca and Br.

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A: P∆V = 4Latm  1 L = 1dm3  1atm = 101,325Pa  P∆V = 4 * 1dm3 * 101325Pa  P∆V = 405300 dm3Pa

Q: K. for the reaction of hydrogen and iodine to produce hydrogen iodide. H2(g) + I½(g) = 2HI(g) is 54....

A: Consider the given information is as follows; Kc = 54.3Initial concentration of H2 and I2 = 0 MIniti...

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Q: When the entropy change of the surroundings is negative, the enthalpy change for system cannot be de...

A: ∆S universe= ∆S system+ ∆S surrounding. Given that ∆S uni.= -ve. The reaction is non spontaneous. Bo...

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Q: The equation below is unbalanced. Balance the equation and then answer the question that follows. C5...

A: Balanced equation: The balanced equation can be defined as the chemical equation where the number of...

Q: What is the pH of a solution containing 0.367 mol L-1 CH3NH2 and 0.169 mol L-1 CH3NH3+?

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Q: In order to keep as much HCHO dissolved in the water in the embalming machine reservoir as possible,...

A: For gases At low temperature solubility is more.  And  HCHO is a gas so to have a great solubility ,...

Q: answer 3

A: Initial Temperature of Balloon,T1 = 155℃ = 273+155 = 428 K Initial pressure of Balloon ,P1 = 1200 to...

Q: (Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank. If no reacti...

A:     Ca(OH) 2 (aq) +    HBr(aq) ———>

Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

A: The sign convention for heat flow are as follows: When the heat flows into the system, a positive si...

Q: 1. Complete the table below, giving the compound's formula and name. F S2. N3. NaF Na+ sodium fluori...

A: Solution                        Given the compound Find formula and name = ?

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A: The reaction of phase-I metabolite with a hydrophilic moiety like glucuronic acid, sulfate group, am...

Q: The equilibrium constant for the reaction Na2(g) → 2Na(g) is 2.47 at 1000. K. Calculate the value of...

A: A question based on chemical thermodynamics that is to be accomplished.

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Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used t...

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Q: A 6.00 L tank at -2.6 *C is filled with 18.9 g of sulfur tetrafluoride gas and 9.34 g of dinitrogen ...

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Q: Calculate the molarity of each of these solutions. a. A 4.053-g sample of NaHCO3 is dissolved in eno...

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Q: Balance the following chemical equation and determine the number of moles of Fe(s) produced when 8.1...

A: Given unbalanced reaction is : Fe2O3 (s) + C (s) ------> Fe (s) + CO2 (g) Number of moles of Fe2O...

Q: Suppose a 250. mL flask is filled with 0.80 mol of NO and 2.0 mol of NO,. The following reaction bec...

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Q: 2. Complete the table below, giving the compound's formula and name. NO; so,?- PO,3- K* Cu2+

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Q: Question 30 Given the following standard reduction potentials: Mn2+(aq) + 2e¯ Mn(s) E° = -1.18 V Cd2...

A: Cd(s) +Mn2+ ---------> Cd2+ + Mn(s) Cathode (reduction half cell) Mn2+ + 2e- ---------> Mn(s) ...

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A: To solve this problem we have to know about oxidation and reduction . Oxidation means increased in t...

Q: e volume of the balloon?

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Q: 2. An alcohol solution contains 35.0 g of 1-propanol (C3H7OH) and 150 g of ethanol (C2H50H). (a) Cal...

A: Consider the given information is as follows; Mass of 1-propanol = 35.0 g                  (solute a...

Q: What is the molecular formula of each compound? a. empirical formula CH (MM = 78.11 g/mol) b. empiri...

A: we are required to find the molecular formula for each of the given empirical formula

Q: What VSEPR shapes are in sucrose

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Q: pH

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Q: Calculate AH and AStot when two copper blocks, each of mass 10.0 kg, one at 100°C and the other at 0...

A: Solution                          Given that Mass of each block= (M1) = (M2) = 10 kg Initial tempe...

Q: Write the anode reaction and cathode reaction for the Fe-Pb voltaic cell that was prepared in Part 2...

A: This is An Galvanic Cell in which Two half reaction takes place simultaneously  . Oxidation and Redu...

Q: The mass of Cu (63.55 g/mol) used to create Cu2S was 16.95 grams. what theoretical mass of Cu2S (159...

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Q: 5. Based on your reading about qualitative analysis and your knowledge of the solu rules, consider t...

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Q: What is the equilibrium reaction of magnesium ammonium phosphate?

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Q: Plot the data above on the graph on below.

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Q: compute the theoretical yield Actual yield: 2.50g weight : 1.80g

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Q: Write the structural formula of the followin, 1.) 3 – Fluorostyrene 2.) p- Ethyltoluene 3.) 3,5 – Di...

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Q: (f) Potassium permanganate (g) Sodium hypochlorite (h) Beryllium bicarbonate (1) Ammonium dichromate...

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Q: Calculate the Kp for the following reaction at 25°C: H2(g) + I½(g) = 2HI(g) ag°: AG = 2.60 kJ/mol

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Q: Ammonium perchlorate (NH,CIO, is the solid rocket fuel used by the U.S. Space Shuttle. It reacts wit...

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Q: Specity which of the tollowing are oxidation-reduction reactions, and it it is, identity the oxidizi...

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Q: This question is about boiling point elevation. What is the effect of solutes on the boiling point o...

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Q: Draw the given direction vector [121] and crystallographic plane (121) in the following cubic unit c...

A: From Miller Indices we can easily draw the plane

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A: Which of these correctly describes an anion ?

Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.