What is the density of NH3 gas at 78˚C and 345 torr?

Q: IDEAL GAS LAW a. A 50.0 L cylinder contains 21.8 g Hydrogen gas at 28 degrees C. What is the pressur...

A: Given,  .a) A 50.0 L cylinder contains 21.8 g Hydrogen gas at 28 degrees C. The pressure (atm) exert...

Q: 2. Aqueous magnesium hydroxide reacts with aqueous hydrocyanic acid to produce aqueous magnesium cya...

A:   Arrhenius acid-base theory:  The substance which increase H+ ion concentration in the solution is...

Q: You are a forensic chemist and vou are given a white powder to analyze. You take a 0.25- g sample of...

A: Given that 0.25 g of a sample is dissolved in 4.0 g of a benzene.Freezing point of the solution is 3...

Q: Calculate the surface tension of ethanol at 0 and 70 °C. Let the critical temperature of ethanol be ...

A: Surface tension of the concerned liquid can be calculated from Eotvos equation.

Q: Which of the following molecules will NOT exist? Select one: O a. H2 O b. Liz2* Ос. Liz O d. Hez*

A: Which of the molecule will not exist ?

Q: A 22.0 g block of copper at 45°C absorbs 2.50 kJ of heat. Given the specific heat of Cu is 0.385 Jig...

A:

Q: Lead (II) nitrate as Pb(NO3)2 and potassium iodide as KI combine to form the products shown. 2 KNO3...

A:

Q: elemental gas has a mass of 10.3 grams. If the volume is 58.4 L and pressure is 758 torr at a temper...

A: Mass=10.3g Volume = 58.4 L Pressure = 758 torr = 758 / 760 = 0.9974 atm ( 1 atm = 760 torr) Temperat...

Q: The dependence of the vapor pressure of a solid mineral on temperature is given by log (p/Torr) = 10...

A: In thermodynamics, the triple point of a substance is the temperature and pressure at which the thre...

Q: What is the specific heat of a metal substance if 135 kJ of heat is needed to raise 5.1 kg of the me...

A: Given,  The mass of a metal = 5.1 kg.  The heat needed to raise temperature from 18.0 °C to 31.5 °C ...

Q: How many milliliters of methyl benzoate will be required to prepare 1.4 g of the nitrated product?

A:

Q: What is the pH of a solution with a OH- concentration of  0.002554322564 molar?

A: given :- [OH-] = 0.002554322564 M  to calculate :- pH of solution 

Q: How much heat is required to raise the temperature of 1.5 x 103 g of water from 45'F to 130.F? The s...

A:

Q: Calculate the initial concentrations for all the solutions. The concentration of stock solutions are...

A: Concentrations of all solutions can be calculated using dilution law                                ...

Q: An electron is confined in a linear molecule consisting of 12 carbon atoms (with C-C bond length "0....

A:

Q: Calculate the number of oxygen atoms in a 130.0 g sample of diphosphorus pentoxide (P205). Be sure y...

A:

Q: 8.6 Complete the following equations. aq. HCI Нeat (a) Ph(CN)CH(CN)CO,Et (b) Me,CHNO2+ HCH=0+EtNH,? ...

A:

Q: Place an asterisk by each stereocenter in the molecules depicted below. Note that if this were an ex...

A: Stereocentre is the particular carbon centre in which groups are attached that orient in different d...

Q: How many moles of gas would you have if you had a volume of 38.0L under a pressure of 1432 mmHg at s...

A:

Q: 1. Suggest two different chemical tests and a major IR frequency that would help distinguish between...

A: According to guidelines, we have to attempt first part.  

Q: e moles of a

A:

Q: ogen, like this: 2 Fe(s)+3 H,O(g)→Fe,O3(s)+3 H,(9) At a certain temperature, a chemist finds that a ...

A: Kc is the ratio of  product of concentration of products raised to their stoichiometric coefficient ...

Q: Calculate the mass of K10, (molar mass = 21402 @/mol) required for par A 1.

A:

Q: Be sure to amer all parts. Heating copper(l) exide at 400°C dees met produce any appreciable amount ...

A: The answer is as follows:  

Q: A 1 liter solution is made by adding 0.4976 moles NaH2PO4 and 0.2000 moles Na2HPO4. What will be the...

A:

Q: theoretical yield of carbo

A:

Q: Consider the following reaction and the tabulated thermochemical data at 298 K. 4 NH32) + 5 O2g) → 6...

A: Answer: This question is based on the relationship between Gibbs free energy change, standard Gibbs ...

Q: mole fraction for th

A:

Q: 6. Using the phase diagram in Question 5, determine the kilograms of beryllium that must be added to...

A:

Q: Be sure to answer all parts. How many moles of cobalt (Co) atoms are there in 7.00 K 10 (7.00 billio...

A:

Q: Select the single best auswer. Which of the following has more atoms: 4.08 g of hydrogen atoms or 18...

A:

Q: Why should we study the strength of acids and bases in Chemistry?

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Q: The rate constant for the first order decomposition of SO2Cl2 is 1.37 ´10-3 min-1 at a certain tempe...

A:

Q: A 4,00 L flask at 25 °C is filled with 0.266 moles of X2 and 0.344 moles of Y2 and allowed to react ...

A:

Q: Determine if the following salts are acidic, basic, or neutral: 1. Hydrazinium bromide (H2NNH Br) is...

A: Concept:  Salf are also basic acidic and neutral in nature. The nature of any salt can be predicted ...

Q: Which of the following will form o2p* orbital? Select one: O a. Side-on overlap of two p orbitals wi...

A: Atomic orbitals combine with other or overlap with each other and form hybrid molecular orbital. Her...

Q: molar mass

A:

Q: Explain isomers

A: Please find the below attachments.

Q: Calculate the molar volume of methane at 300 K and 100 atm given that the second virial coefficient ...

A: Theoretically, the second virial coefficient represents bimolecular attraction forces, and the third...

Q: The overlap of atomic orbitals shown here will give rise to a molecular orbital with what type of ch...

A: Concept : Atomic Structure  1) positive part of wave function + positive part of wave function leads...

Q: A 4.00 L flask at 25 °C is filled with 0.266 moles of X2 and 0.344 moles of Y2 and allowed to react ...

A:

Q: Which of the following bonds is arranged in order of INCREASING ionic character? Select one: O a. C-...

A:

Q: equilibrium concentration at

A:

Q: The distribution coefficient, k = (concentration in hexane/concentration in water), for solute A is ...

A: Distribution coefficient of solute (Kd) = 7.5 Initial concentration of A in water = 10 g in 90 mL Pr...

Q: A sample of 4.25 moles of hydrogen at 20.0 C occupies a volume of 25.0 liters. Under what pressure i...

A:

Q: a. Cyclooctatetraene (COT) is shown below. use the Hückel molecular orbital theory "polygon-in-circl...

A: The pi molecular orbital diagram of cyclooctatetraene is needed to be drawn using the Huckel's molec...

Q: At a certain temperature, the equilibrium constant K for the following reaction is 9.34 x 10°: H,(g)...

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Q: Total # Valence e Lewis Structure Electronic geometry Molecular (name & drawing) geometry Molecule P...

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Q: What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr2O3 wi...

A: Aluminum reacts with chromium(III) oxide to form chromium and aluminum oxide. The equation for the b...

Q: What series of intermediates requires the delocalization of electrons in the following manner? O Sig...

A: We have to find the type of intermediates that will require the delocalization of electrons in the 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.