What is the average mass, in grams, of one Zna Multiple Choice O 1661 x 10 24 O 65.39 amu O 65.39 g 394 x 1025,

Q: Enter the number of electrons in each energy level (shell) for each of the elements. If the energy l...

A: The no of electrons in each element equals the atomic no of that element.

Q: A chemist measures the amount of nitrogen gas produced during an experiment. He finds that 87.8 g of...

A:

Q: Be sure to answer all parts. The AG° for the reaction H;@) + 1;6) = 2HI) is 2.60 kJ mol at 25°C. Ia ...

A: H2(g) + I2(g) <===> 2HI (g) ∆Go = 2.60 kJ R = 8.314 Jmol-1 K-1 T = 298 K

Q: A certain shade of blue has a frequency of 7.32×10^14 Hz. What is the energy of exactly one photon o...

A: given :-  frequency (v) = 7.32 × 1014 Hz  h = 6.626 × 10-34 J.s  To calculate :-  energy of one phot...

Q: Mass of beaker 50.5g Mass of marble before reaction 3.0g Mass of marble after reaction 1.8g Vo...

A: The Chemical reaction follows the law of conservation of mass. According to the law of conservation ...

Q: Show calculations for making 1X TAE gel running buffer and 1.25% agarose gel for your experiment.

A: Buffer is a solution that tends to maintain pH of the solution when acid or base is added to it. Per...

Q: 4. What weight (in grams) of lactose (C12H22011 , MW= 342 g/mole) is required to prepare each of the...

A: Note: As per company policy we are supposed to attempt first three subparts only. Please repost othe...

Q: Enter your answer in the provided box. The reaction between nitric oxide (NO) and oxygen to form nit...

A: 2NO(g) +O2 (g)  -----> 2NO2(g)   The question is based on molee concept  2 moles of NO react with...

Q: You are assigned as a design engineer to design a Carbon Dioxide Capsule (CO2). The design means you...

A: Given: Diameter of cylindrical float = 0.45 m Radius of cylindrical float = 0.225 m length of float ...

Q: 9- Calculate the molar concentration of HNO3 (63.0 g/mol) in a solution that has a specific gravity ...

A: Molarity is a concentration term for a solution. The molarity of a given solution is defined as the ...

Q: 25

A: Calculate the standard enthalpy change for the reaction ., 2C8H18 (l) + 17O2 (g) -> 16CO (g) + 18...

Q: An acid constant / base constant that is higher than 1 indicates that: The acid is a weak acid and t...

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Q: What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr203 wi...

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Q: Which of the following processes is exothermic, given the following N2lg) + 202lg) - N204) AH"=9.67 ...

A: Any reaction that gains energy is endothermic while exothermic reaction looses energy. So, for exoth...

Q: You are assigned as a design engineer to design a Carbon Dioxide Capsule (CO2). The design means you...

A: Given: Diameter of cylindrical float = 0.45 m Radius of cylindrical float = 0.225 m length of float ...

Q: Part A As a technician in a large pharmaceutical research firm, you need to produce 100. mL of 1.00 ...

A:

Q: Be sure to answer all parts. Heating copper(II) oxide at 400°C does not produce any appreciable amou...

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Q: 2. A quart of water weighs 4.05 pounds Calculate: a. Mass in slugs b. Mass in kilograms С. Volume in...

A: Given mass in pound

Q: Click in the answer box to activate the palette. Determine the empirical formula of a compound havin...

A: Element % K 24.74 Mn 34.76 O 40.50    

Q: Determine the viscosity of diethyl ether at 77 degrees Celsius.  (Pa·s)

A: 1. From Dortmund data bank of diethyl ether, The viscosity of diethyl ether at 77°c = 350.15k is 0.1...

Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

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Q: Solid aluminum and gaseous oxygen react in a combination reaction to produce aluminum oxide: 4Al (s...

A: given :-  4Al (s) + 3 O2 (g) → 2 Al2O3 (s)  mass of Al = 2.5 g  mass of O2 = 2.5 g  actual yield of ...

Q: What is the average mass, In grams, of one Zn atom? Multiple Choice O 394 x 10259 O 65.39 amu O 1661...

A: Calculation of mass of zinc:

Q: Phenolphthalein has a pKa of 9.7 and is colorless in its acid form and pink in its basic form. For ...

A: Given value from the question, pH= 7.7 pka=9.7  

Q: What volume of a 0.540 M KOH solution contains 15.5 g of KOH?  My question: After converting the gr...

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Q: r answer below the formula. Identify the classification of each structural formula of biomolecules. ...

A:   Biomoelcules:   All living bodies are composed of several lifeless substances which are present in...

Q: Consider the following reactions and associated equilibrium constants: A(g) C(g) K. = 1.700 *104 D(g...

A: Answer: This is the question based on the in depth understanding of equilibrium constant expression.

Q: A 8.00 L tank at 4.12 °C is filled with 11.7 g of chlorine pentafluoride gas and 14.1 g of boron tri...

A: Partial pressure of chlorine pentaflouride PV = nRT   P= ?  V = 8L  n = 11.7/130.4 = 0.089  R = 8.31...

Q: els Part IV: Iron content ofan unknown well water sample 34 lowo Unknown Well Water Code Unknown Wel...

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Q: Draw the structure of the product/s in each of the following rea Provide your final answers in the s...

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Q: 1. 3C2H5OH) + 2O2ig) 5CO2(9) + 2H2O(@) 2. 2NO2(9) 2NO(9) + O2(9)

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Q: Describe the motion and arrangement of particles at absolute zero. Use the paperclip button below to...

A: Outright zero is the most minimal conceivable temperature where nothing could be colder and no hotne...

Q: Activity 2. Complete the table to prepare the given solutions with different concentrations: Mass So...

A: Solution-A             5 % by volume 25 mL HNO3 solution         Total volume of solution = 25 mL   ...

Q: How many protons, neutrons, and electrons are there in a neutral atom of 113In (indium-113)?

A: Atomic number of indium = 49 Atomic mass of indium = 113

Q: How much heat (kJ) is evolved when 4.50 g of Fe202 is reacted with excess carhon monoxide using the ...

A: Answer and explanation is given below hope you like it.

Q: Formic acid, from the Latin formica, is the acid present in ants sting. What is the concentration of...

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Q: If you calculated the molar mass of your unknown liquid to be 70.1 g/mol, which of the following do ...

A: Given-> Calculated molar mass of unknown liquid =70.1 gm/mole.    

Q: 3- Qualitative analysis : establishes the chemical identity of the species in the sample like (solid...

A: (1) Qualitative analysis :-  Qualitative analysis concern with detection of elements or radicals in ...

Q: Which of the following is INCORRECTLY matched? Select one: a. Br with acidified Fe(NO3)3 and toluene...

A: To identify the incorrectly matched statement.

Q: You are given a 50 ml solution of NADH having an A340nm Of 0.31. What is the concentration of this s...

A: Absorbance =ε c t ε = Molar absorption coefficient (mol-1L cm-1) c = Concentration (mol/L)t = Thickn...

Q: A 13.6 mL solution of 0.100 mol L-1 CH3COOH is titrated using 0.150 mol L-1 NaOH. What is the pH of ...

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Q: Assuming 100% dissociation, 1.0 mol of NaBr dissolved in 250 g of water [ Select] have the same coll...

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Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

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Q: A cheeseburger from a fast food restaurant contains 19 g of fat, 20go carbohydrate, and 28 g of prot...

A: Answer:- We can determined the energy of cheegburger by find the energy of protein,fat and carbohydr...

Q: What are the different types of hybridization?

A: Given question is : What are the different types of hybridization = ?

Q: Methyl p-Nitrobenzoate

A:   Methyl p-nitrobenzoate H1-nmr spectrum: Number of non-equivalent protons = 3 Number of signals i...

Q: i ezto.mheducation.com/ext/ Saved Module 1 Exam Packaged cake mixes usually contain baking powder, a...

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Q: What is the molarity of a concentrated solution of sulfuric acid with a specific gravity of 1.84 and...

A: Given,  The molarity of a concentrated solution of sulfuric acid with a specific gravity of 1.84 and...

Q: HO (i) (R)-2-bromobutane 25 C 25"C ) ()-3-Bromo-3-methylhexane MeOH (k) (5)-2-Bromooctane MeOH, 60°C

A: SN2 Nucleophilic substitution via second order Strong nucleophile+ good leaving group+ primary or se...

Q: Complete the following acid-base reaction and write the complete ionic equation for the reaction: (Y...

A: Acid-Base reactions are those reactions in which an acid reacts with base to form salt and water. Ac...

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.