In what geographical region of the country would a civil engineer most likely to use concrete with air entraining admixtures in a design? Explain your answer.

Q: An excess of sodium carbonate, Na2CO3, in solution is added to a solution containing 17.87 g CaCl2. ...

A: Given: 17.87 g CaCl2 12.51 g of CaCO3

Q: CCl4is a nonpolar molecule, while CHCl3and CH2Cl2are polar molecules. Draw the Lewis structures of t...

A: Lewis dot structure - It is the structural representation of the molecule which is shown by the elec...

Q: Instructions: a,B-Unsaturated aldehydes and ketones can undergo reaction with nucleophiles at the B ...

A: Given information,

Q: You need 500 mL of a 0.5 M iron(III) chloride solution. You only have a 3.0 M FeCl3 solution on hand...

A: Molarity of a solution is defined as the number of moles of solute present in one litre of a solutio...

Q: Describe how functional groups (toluene to be specific) are characterized for the Nitration test and...

A: The remarkable stability of the unsaturated hydrocarbon benzene has been discussed in an earlier cha...

Q: For each of the following reactions, will the reaction shift towards the reactants, products, or no ...

A: According to our guidelines, I can only answer first question because you have posted muktiple quest...

Q: When 5.82 g of magnesium nitride is place in 9.73 g water, the reaction is:                      Mg3...

A: The problem provided has three questions included, please resubmit individual questions as only a si...

Q: 2. Write the net ionic equation for the following reactions.

A: Steps Write the balanced equation Mention states (s, l, aq)  of each species.  Write total ionic eq...

Q: A sample of neon gas collected at a pressure of 0.673 atm and a temperature of 7.00 °C is found to o...

A: Answer: Amount of neon i the sample is 0.632 moles.

Q: When 5.82 g of magnesium nitride is place in 9.73 g water, the reaction is:                      Mg3...

A:

Q: If an arbitrary wave function is used to calculate the energy of a quantum mechanical system, the va...

A: n quantum mechanics, the uncertainty principle (also known as Heisenberg's uncertainty principle) is...

Q: A sample of gas contains 0.1900 mol of HCl(g) and 9.500×10-2 mol of Br2(g) and occupies a volume of ...

A: The expression of ideal gas equation is shown below: PV = nRT Where; P = pressure V = volume n = mol...

Q: What is the pH of a 0.0680 M solution of hydrocyanic acid, HCN (Ка %3D 4.9 х 10-10)?

A:

Q: Calculate the number of grams of solute needed to make each solution.   a) 1.00 L of 1.59 M KNO3    ...

A: Number of grams of Solute to make each solution can be calculated as:

Q: How many mL of 0.743 M HCI are needed to dissolve 7.59 g of MgCO3? 2HCI(aq) + MGCO3(s) MgC2(aq) + H2...

A: Given: MgCO3 = 7.59 g V = ? HCl 0.743 M 

Q: A slightly soluble salt has the formula A3B5 and a Ksp of 7.6E-26. What is pB in a solution of this ...

A: The pB value for given conditions is 3.75

Q: parts d and e

A:

Q: Many studies have shown that one specific enantiomer of citalopram (“S”) is the one capable of inhib...

A: A chemical substance, called serotonin, present inside the human, helps to control the mood and imba...

Q: When the following equation is balanced properly under basic conditions, what are the coefficients o...

A: To balance a reaction in basic conditions first balance as in acidic medium then add hydroxide to bo...

Q: Question 13 of 13 Submit When 2.63 g of a polypeptide is dissolved in 205 mL of water, the resulting...

A:

Q: In lab, a student reacted copper (Cu) with iodine (I2) to make copper (I) iodide (CuI). She added 43...

A: A mole is defined as the amount of substance containing the same number of discrete entities (atoms,...

Q: What is the pH of a buffer that is 0.153 M in a weak acid and 0.227 M in the acid's conjugate base? ...

A: Weak Acid concentration = 0.153 M. Conjugate base Concentration = 0.227 M. Ka = 5.7 × 10-4 pKa = - l...

Q: Please answer the following question.

A: as per Q&A guidelines of portal I solve first question because it comes under multiple question ...

Q: Which of these elements is most reactive? Li K Na

A: alkali metals are most reactive among other elements of the periodic table,  Because they easily loo...

Q: Enough water is added to 50.0 mL of a 0.660 M NaOH solution in order to bring the total volume to 45...

A:

Q: Consider the titration of 15.0 mL of 0.130 M Na A (a weak base) and 0.100 M H Cl. Calculate the pH o...

A: The pH of a solution is the negative logarithmic of hydrogen ion concentration in the solution. Math...

Q: UCI Chemistry researchers, Prof. F. Sherwood Rowland and Dr. Mario Molina werefirst to discovered in...

A: Chlorofluorocarbons are harmful to the environment as well as the living system. Free ions bind with...

Q: Enter electrons as e-. Use smallest possible integer coefficients. If a box is not needed, leave...

A: The electrode which has less negative reduction potential will act as a cathode and will undergo red...

Q: Use Coulomb’s Law and principles of atomic structure to answer these questions. Use bullet points fo...

A: Answer: IE order Na > K  IE is defined as the minimum amount of energy is required to remove the...

Q: which of the following cannot be distinguished by an infrared spectrum I) resonant hybrids II) tauto...

A: I) resonant hybrids II) tautomers (keto-enol) III) enantiomers IV) cis-trans isomers

Q: GFE&E 1. Determine ∆Grxn in kJ/mol for this reaction at 25oC (use the data table posted on Black...

A: Please find the file attached for explanation

Q: Calculate Eº for the following voltaic cells: a) MnO2(s) + 4H*(aq) + → 21-(aq) Mn2 (aq) + 2H2O + l2(...

A: a) The cathode and anode half cell reaction is as follows: Cathode                        MnO2+4H++2...

Q: The number of grams of LiI (lithium iodide) present in 2.86 L of a 0.215 M LiI solution is:   a ...

A: Volume of LiI solution = 2.86 L Molarity of solution = 0.215 M  

Q: B с D C A CEC-CH2CH3 H N-H

A: Bond angle is the angle between two bonds. It can be easily predicted if you know the hybridization ...

Q: Please answer the following in the attachment.

A: The entropy is the measurement of randomness or uncertainty of the system. Now, the disorder of any ...

Q: AM radio stations broadcast at frequencies between 530 kHz and 1700 kHz. (1 kHz = 10°/s.) For a stat...

A: Given information: frequency=1.51×103 kHzPlanck's constant h=6.63×10-34 J.s

Q: Draw formulas that illustrate the hydrogen bonding that may exist between two polyamide molecules of...

A: A question to illustrate the H-bonding between polyamide molecules of nylon.

Q: Be sure to answer all parts. How quickly must a 57.7-g tennis ball travel in order to have a de Brog...

A: De Broglie gave an equation showing the relation of mass and velocity of a particle with its wave le...

Q: You set up a reaction with Gallium metal in excess hydrochloric acid at 28 degrees Celsius. It react...

A:

Q: The freezing point of pure benzene is 5.49 °C. The freezing point of a solution made using toluene i...

A: freezing point is defined as a temperature at which liquid is converted into solid.

Q: What are the concentrations of the following ions in these solutions? a) sodium ion in a 0.85 M solu...

A:

Q: Enter electrons as e-.   Use smallest possible integer coefficients.   States are not required. ...

A:

Q: Arrange the following molecules in order of increasing average molecular speed. All are at the same ...

A: Given : molecules. Helium (molar mass) =4.002 u argon (molar mass) = 39.948 u krypton (molar mass) =...

Q: For many purposes we can treat propane (C,H) as an ideal gas at temperatures above its boiling point...

A: Initial temperature, pressure, volume of the propane gas, whose final pressure is to be determined u...

Q: The electrolytic conductivity of NaCl solution at 18oC is 0.0124 ohm-1cm2 mol-1 and the resistance o...

A:

Q: What is the solubility of PbF, in a solution that contains 0.0600 M F- ions? (Ksp of PbF, is 3.60 x ...

A: Given that fluoride ion present is 0.0600 M . Ksp expression can be written as follows: Ksp=[Pb+2] [...

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