Argon gas is collected by water displacement in an eudiometer. The gas volume is 29.2 mL. The liquid inside and outside eudiometer are the same, the temperature is 21 degree C, the barometer reading is 99 kPa. Calculate the volume of dry argon at STP(26.5L). ( may use help dalton law)

Q: If 100g each of the two reactants (dimethyl terepththalate and ethylene glycol) above were combined ...

A:           Mass of dimethyl terephthalate (DMT) = 100 g Molar mass of dimethyl terephthalate (DMT) = ...

Q: identify the most electrophilic molecule and briefly justify your choice.

A: Electrophile is species which carries positive charge on carbon and nucleophile is species which car...

Q: Check the statement(s) that are true.     A. The internal electrons contribute to increasing the at...

A: Screeing effect is the effect in which inner shell electrons shields the the outer most shell electr...

Q: Which of the following is NOT true of the transition state? O a. It is unstable and dissociate into ...

A:

Q: For a water sample with a bicarbonate ion concentration of 50 mg/L and a CO2 content of 30 mg/L: a) ...

A:

Q: factors

A: unit of measure called the partition coefficient. The greater the solubility of a substance, the hig...

Q: Which has the LEAST negative heat of combustion among the compounds below? Select one: a. "tBu Ob. *...

A: Amount of heat need to completely burn the one mole of compound is known as heat of combustion of th...

Q: How many grams of ethylene (C2H4) would have to be burned to produce 450 kJ of heat? C2H4(g) + 302(g...

A: Given :-  C2H4(g) + 3O2(g) →2CO2(g) + H2O(l)  ∆H°rxn = -1411 kJ/mol  To calculate :- amount of C2H4 ...

Q: m Calculate the kinetic energy of a 159.0 g baseball moving at a speed of 42.0 Round your answer to ...

A:

Q: Given: H2(g) + 1/2 O2 (g) —> H2O (l) Delta H = -285.8 kJ   Combine this equation with equation 1 a...

A: For combustion reaction , we need The compound ( or element ) and Oxygen as reactants, because combu...

Q: An electron in a hydrogen atom makes a transition from an n = 2 orbital to an n = 5 orbital. a. For ...

A: Initial value of n for electron = 2 Final value of n for electron = 5   The question requires to det...

Q: Solve the problems and show your solutions. a) At 600°C, methane, CH4 reacts with elemental sulfur,...

A:

Q: Solve the problems and show your solutions. a) Lead(II) sulfate, which is insoluble in water, disso...

A:

Q: Determine the product of the following reaction! 1. ELONA/EtOH 2. EtO OEt

A:

Q: Solve the problems and show your solutions. a) A muscle pain reliever liniment is labeled 30.0% w/v...

A:

Q: Molarity Calculations. Report answers with correct units and number of sig figs please. A. What mas...

A:

Q: Which of the following represents Hund’s rule? A. No two electrons can have the same set of quantum ...

A: HUND'S RULE HAVE VARIOUS FORM,WILL EXPLAIN THEM BY EXAMPLE

Q: xenon atom, how many electrons at most can contain the 3p orbitals?

A: For a particular 'n'  value ,  possible azimuthal quantum number (l) = (n-1)...0 Here n= 3 , possibl...

Q: concentration

A:

Q: A 20.0 mL sample of 0.115M H2SO3 is titrated with 0.1014 M KOH. At what volume (of added base) does ...

A: Given data  : Concentration of H2SO3 = 0.115 M Volume of H2SO3 = 20.0 mL Concentration of KOH = 0.10...

Q: A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reducti...

A: In electrochemical cell Oxidation takes place at anode and reduction takes place at cathode. If elec...

Q: 7. The five spheres below represent Se, Se?, O, H, and S, not necessarily in that order. 37 pm 72 pm...

A:

Q: What is the pH of a solution with a hydroxide concentration of 3.80X10-5 M

A:

Q: Which of the following is expected to result in the following compound ? EņCuli CH;CH,MgBr OCH; 1) O...

A:

Q: compared to HCO3-, H2co3 has a A Stronger conjugated base B Weaker conjugated base C Higher ka D...

A: Acid can be defined as the substance that give hydrogen ions in a solution and base is a substance t...

Q: Treatment of 1,2-dimethylcyclopentene with Pt and H2 gas will produce a.cis-1,2-dimethylcyclopentan...

A: it is a surface catalyst reaction hydrogen to the less steric position and it will be syn manner and...

Q: Sulfur dioxide and nitrogen dioxide react at 298 K via the reaction so,() + NO,(g) SO,(g) + NO(g) A ...

A:

Q: Each row of the table below describes an aqueous solution at about 25 °C. Complete the table. That i...

A:

Q: 14.8 M NH3 solution is needed to prepare a solution containing 200.0 mL of 3.4 M NH3. How many mL of...

A: V1 =? M1 = 14.8 M V2 = 200 mL M2 = 3.4 M

Q: Solve the problems and show your solutions. a) Aluminum phosphide synthesis is done through the fol...

A: Given :-  The unbalanced chemical equation for the reaction between Al and P4 to synthesis Aluminum ...

Q: 1 3 NH2 H3CO H. 2

A: The atom which can easily donate electron is the most basic atom.

Q: As promised, here is the "predicting proper resonance structures" question! Which of the following c...

A: The possibility of resonance( delocalization of double bonds) in an organic compound, makes it more ...

Q: Adult oyster shells are composed mainly of calcite, CaCO3. It’s dissolution in water can be describe...

A:

Q: Consider a 1.0 L buffer containing 0.113 mol L HOCI and 0.081 mol L OCI. What is the pH of the solut...

A:

Q: Find the product of the following reaction!

A:

Q: A 50.0 mL sample of 0.436 M NHANO3 is diluted with water to a total volume of 250.0 mL. What is the ...

A:

Q: 12.What is the pH of a 0.001 0M HNO, solution with an ionic strength of 0.05 M? At µ = 0.05) Y#. = 0...

A: Concentration of HNO3 = 0.0010M 

Q: Rank the aryl halides in each group in order of increasing reactivity in nucleophilic aromatic subst...

A:

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

A:

Q: Consider a 1.0 L buffer containing 0.113 mol L HOCI and 0.081 mol L OCI. What is the pH of the solut...

A: In question 1 we will be dealing with a buffer solution and will calculate the pH after certain mole...

Q: Estimate the moles of Cu(NH3)4* formed, assuming all the original Cu2+ in the porous cup reacted to ...

A:

Q: 2-Methyl-2-butene reacts with HBr in the presence of peroxide to give a. a secondary alkyl bromide....

A: An alkyl halide can be defined as the organic compound in which a halogen atom is attached to carbon...

Q: Determine the product of the following reaction! OH РСС

A:

Q: some articifical sweeteners are isomers of natural sugars.  Being isomers, the digestive enzymes do ...

A: Null Hypothesis (Ho)- The artificial sweeteners will not significantly alter cell respiration in yea...

Q: Which of these reasons contribute to the very large gap between the second and third magnesium ioniz...

A: Here, we have to find the reason that contributes to the very large gap between the second and third...

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 796.0 mg sample...

A:

Q: Use the chemical equation and the table to answer the question. Pb(NO3)2(aq) + 2KBr(aq) → PbBr2(s) ...

A:

Q: [1] (CH3)½CCI, AICI3 [1] Cl2, FeCla с. [2] KMNO4 [2] Zn(Hg), HCI NO2 [1] Br2, hv [1] CH3NH2 d. O2N- ...

A: Organic reaction mechanisms:   As per our guideline we have to answer first three questions only.

Q: 1)) Determine the structure of the products in the three reactions and indicate if the final product...

A: HNO3 - H2SO4 is a nitrating mixture that undergoes nitration in benzene.  KMnO4 is an oxidizing agen...

Q: 12. A year ago there were 4 grams of a radioactive substance. Now there are 3 grams. How much was th...

A:

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.