7. A sample of an ideal gas has a volume of 2500 ml at STP. What is the volume if the pressure is doubled and the temperature is decreased to 75°K?

Q: .Suggest how to make syndiotactic/isotactic polystyrene on the one hand and on the other hand how to...

A: Step-I Isotactic polymers have the side groups attached on one side of the backbone chain whereas th...

Q: What are the distinguishing features of gas and vapor poisoning compared with other types of poisoni...

A: A question based on catalysis that is to be accomplished.

Q: CH3 CH2 CH3 (с) (а) (b) PPH

A: Concept IUPAC nomenclature; 1) According to IUPAC nomenclature system longest chain is selected whic...

Q: 3. Synthesis as part of your synthesis. You may use any other reagents necessary. Design a synthetic...

A: The reaction is as follows:  

Q: FeBr2 + 2 KCl →  FeCl2 + 2 KBr              What is my theoretical yield of iron (II) chloride if...

A:

Q: Which of the following has one lone pair of electrons? Question 1 options: a) nitrogen b) fluorine c...

A: The correct answer is given below

Q: 5. Density is an important property of the matter, answer the following: (b) Select (1) or (2) to co...

A: Here, we have to find whether density is a physical or chemical property of matter.  

Q: Rank the following alkenes in order of decreasing values of Amax- structure A structure B structure ...

A:

Q: explain what will happen to the liquid on a watch glass if it is transferred into a small container ...

A: Given : We have to tell what will happen if liquid kept on watch glass is placed in freezer for a fe...

Q: 1. Adding a solute to a solvent freezing point because the chemical the forces between the makes it ...

A: Given: Effect of adding solute on the freezing point of the solvent.  

Q: topic: matter do you think that each sample occupies space? write the reason(s) for each sample sm...

A: Yes, since the two items listed above is an example is matter which occupies space while the light a...

Q: Refer to the number ndnds (2 and Use the drop-down features to describe the two curved arrows that s...

A:

Q: Determine the mass in grams of C«H10 that are required to completely react to produce 8.70 mol of CO...

A: The balanced reaction given is, Given: Moles of CO2 produced = 8.70 mol.  

Q: sample is the sample matter? (yes, no, not sure) reason heat light sugar granules ...

A:

Q: Prepare 1 liter of 0.5M sulfuric acid from a concentrated aqueous solution. Sulfuric acid density is...

A: H2SO4 We have to determine the concentration of H2SO4 first and then dilute to prepare 1 L of 0.5 M ...

Q: 3. Predict products stereochemistry and mechanisms of the following reactions. CO2H A = .CO2R Ph N' ...

A: The given substrate is an enolizable aldehyde which in the presence of the chiral catalyst (R-prolin...

Q: Properly (i.e., systematically) name the following 1. PAS3

A: The name of a compound can be done by the IUPAC rule. According to which, in an inorganic compound, ...

Q: Use linear approximation, i.e. the tangent line, to approximate 2.86° as follows: Let f(x) = x³. The...

A: Given that : f(x)=x3

Q: Which of the following substances has the lowest absolute molar entropy at 25°C?   Group of answer c...

A: The substances given are HCl(l), HCl (g), HCl (s), HBr (g) and HI (g).  

Q: Write an IUPAC name for the following alkane/cycloalkane: Name:

A:

Q: This compound was synthesized from benzene by the scheme outlined. CH3 Br ČH3 1. CH3CI, AICI3 2. CH3...

A: The first step of this synthesis is called Friedel craft alkylation . It is an electrophilic aromati...

Q: Methane and water react to form carbon monoxide and hydrogen, like this: CH,(2)+H,O(2) -→ CO(2)+3H,(...

A: The reaction shifts towards the side which has fewer moles or pressure.

Q: If an atom has 7 protons, how many electrons does it want to gain in order to fill its valence shell...

A:

Q: Exp # 1: suppose you have a{ Na+(aq), Ag+(aq)} solution, and you’re asked to separate the 2 ions How...

A: Given that, a mixture of Na+ ion and Ag+ ion. We have to separate them. We know that, Na is a group-...

Q: What is the IUPAC name of this spectrum

A: IUPAC name have some specific rule

Q: For the reaction 2NOCI 2NO + Cl, the rate constant k equals 0.020 L mol-1 s1 at a certain temperatur...

A: We have to predict the time taken.

Q: Given that the total pressure over a solution of benzene and toluene is 100.0 Torr, calculate the mo...

A: Total  pressure over a solution of benzene and toluene = 100 torr Pressure of benzene in pure state ...

Q: T0.03g 1. Mass of empty small evaporating dish (nonalpe noin2.24g 2. Mass of small evaporating dish ...

A: The mass of empty small evaporating dish is = 70.03 g The mass of small evaporating dish + mixture i...

Q: Exp # 2: suppose you have a {Zn2+(aq), Fe3+(aq)} solution, and you’re asked to separate the two ions

A: We have to separate Zn+2 and Fe+3 ions.  

Q: Coulometry consumes larger amount of analyte than voltammetry Electrodes of the second kind can resp...

A: All question are true/false questions based on electrochemistry. The knowledge of electrodes, equiva...

Q: A container is filled with 5g of gas at STP. It is heated to 35°C with pressure being kept constant....

A: Given: Mass of gas = 5 g. Initial conditions are STP conditions i.e. 1 atm and 273.15 K. And final t...

Q: Which of these compounds cannot be made in one synthetic step from the alkene in the box? All these ...

A: The correct answer is given below

Q: NH2 A. Absent v Pi delocalization B. Present CH hyperconjugation Lone-pair delocalization v Inductiv...

A:

Q: suck water from a cup up to the 30ml of a syringe without needles. cover tightly the tip of the syri...

A: Given: Suck water from a cup up to the 30ml of a syringe without needles. cover tightly the tip of t...

Q: 4. What is observed when th Na2SO3 solution is added to the CuCl2? 5. Which gas can be smelled when ...

A: As Student asks for doing answers from question number 4 ---- Ans. 4) When Na2SO3 is added to the Cu...

Q: C: Classify the specific ingredient of household substances as either Bronsted-Lowry acid or a Brons...

A: The compounds given are,  

Q: 1. The decomposition of azomethane (C2H6N2) creates nitrogen gas and ethane gas (C2H6) with a rate c...

A:

Q: A sample of 5 lactobacillus bacteria found in yogurt measure 7.9 x 10-6 m in total length. A second ...

A: Total length of 5 bacteria = 7.9 x 10-6 m Total length of 3 bacteria = 5.2 x 10-6 m

Q: The analysis of a salt shows that it contains 56.58% potassium (K); 8.68% carbon (C) and 34.73% oxyg...

A: Given: Mass percent of K = 56.58 %. Mass percent of C = 8.68 % And mass percent of O = 34.73 %  

Q: How many maxima to you expect a propane (C3H8) molecule to have on its internal potential energy sur...

A: Stereochemistry is the branch of chemistry which study the spatial arrangement of atoms and molecule...

Q: The gas phase decomposition of nitrosyl chloride at 400 K NOCI(g)- →NO(g) + ½ Cl2(g) is second order...

A:

Q: Suppose a 250. mL flask is filled with 1.8 mol of H,O, 0.30 mol of CO and 0.10 mol of H,. This react...

A: The solution is as follows:  

Q: The carbocation electrophile in a Friedel-Crafts reaction can be generated in ways other than by rea...

A:

Q: How many grams of citric acid and mL of 1M sodium hydroxide must be added to 500 mL of water to prod...

A: When the total solute concentration is 1 mM, [Citric acid]+[NaOH]=1×10-3 M                          ...

Q: A sample of trifluoroacetic acid, C,HF,02, contains 25.3 g of fluorine. Calculate the mass of the tr...

A: One molecule of C2HF3O2 contains 2 atoms of carbon, 1 atom of hydrogen, 3 atoms of fluorine and two ...

Q: 20. Draw Lewis dot structures showing the formation of an ionic compound from each of the following ...

A: Lewis dot structure of given compounds are as follows

Q: one lone electron

A:

Q: Several mechanisms have been proposed for the reaction... H202 + 21 + 2H+ → I2 + 2H20 Which of the f...

A:

Q: An element consists of 4.35% of an isotope with mass 49.946 u, 83.79% of an isotope with mass 51.940...

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,...

Q: Write ionic equations and net ionic equations in the following reactions: Na2S(aq) +  ZnCl2(aq)  → ...

A: In an ionic equation, the chemical reaction is written as the ions present in the reactants and in t...

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.