On the planet Kracalac, in another solar system, argon has three naturally occurring isotopes as follows:      Isotope                         Mass (amu)                              Natural Abundance (%)      Argon-36                     35.968

Q: Part A Citric acid is a triprotic weak acid. If 11.8 mL of 0.150 M NaOH is required to reach the…

A: Note - Since the given question is a multiple question hence I solved first question according to…

Q: The number of moles of iron produced from 0.216 moles of aluminum is: 3 FeO (1) + 2 AI (I) ---> 3…

A: We have given that  The number of moles of iron produced from 0.216 moles of aluminum is: 3 FeO  +…

Q: Convert the pressure measurement of 251 torr into units of mmHg.

A: The Answer to the following question is- Both torr and mmHg(millimeter of mercury), is unit of…

Q: 35. How many grams of sucrose must be added to 475 mL of water to make a 65% (w/w) solution? 35.…

A:

Q: CR 2 CH₂ CH B 10. Show how you would make the following compound using a Grignard reaction. Start…

A:

Q: To understand several methods of measuring gas pressure. Gases exert a measurable pressure (P) on…

A: Given, Pressure in container = 385 kPa

Q: The ideal gas law (PV=nRT) describes the relationship among pressure P. volume V, temperature T, and…

A: Temperature and pressure are linearly related, and if the temperature is on the kelvin scale, then P…

Q: The density of a gas is 1.49 g/L at a temperature of 24 ∘C and a pressure of 0.789 atm. Calculate…

A:

Q: 3. Natural Rubidium has the average mass of 85.4678 and is composed of isotopes 85Rubidium (mass=…

A: #Q.3: Given the average mass of Rubidium(Rb), M = 85.4678  Molar mass of the 1st isotope,…

Q: Name the three alkenes using system H3C CH3 A. H3C с =c C H The name of compound A is:

A:

Q: 3. Based on the following solubility observations, which is the best solvent to recrystallize the…

A:

Q: Complete the balanced neutralization equation for the reaction below. Be sure to include the proper…

A:

Q: d. If 2500. kJ of heat are released by the reaction, how grams of C12H26 must have consumed/used?…

A: The given reaction is - 2C12H26 (l) + 37O2 (g)→24CO2 (g) +26H2O (l)                ∆H=-15,026 kJ…

Q: Prove that the Keq for the reaction between Pb2+ and HF is 12.4. (Ksp, PbF2 = 6.76 x 10-4 and…

A:

Q: Can cadmium (II),  and mercury (II) be separated quantitatively by precipitation as sulfides from a…

A: The solution to be separated has [Cd(NO3)2] = [Cd2+(aq)] = 0.15 M [Hg(NO3)2] = [Hg2+(aq)] = 0.10 M…

Q: == Q5.60 Homework Unanswered Consider the decomposition reaction of ammonia at 723 K: 2 NH3(g) →…

A: Given reaction : 2 NH3 (g) → N2 (g) + 3 H2 (g)  ΔH = +92.6 kJmol-1 Temperature (T) = 723 K

Q: Determine the temperature (in °C) of a 2.77-mol sample of He gas at 8.11 atm in a container with a…

A:

Q: 6. Indicate whether the following make buffer systems? Make sure to explain your answer. a. HC2H3O2…

A: A buffer solution maintains a constant pH upon addition of a small amount of strong acid or strong…

Q: Wo solutions were made, the first one was made by dissolving 2.27 g of Co(NO3)2 in 100.0 mL of…

A: The mass of cobalt nitrate (Co(NO3)2)  [m] = 2.27 g the molar mass of cobalt nitrate (Co(NO3)2) [M]…

Q: The recommended daily allowance (RDA) of calcium is 1.2 g. Calcium carbonate contains 12.0% calcium…

A:

Q: D3h Г E 6 Reduce the following representation into its irreducible components 2C3 2S3 30v 3 1 4 3C₂…

A:

Q: Which reaction pathways shows the effect a catalyst (black) might have on an uncatalyzed reaction…

A:

Q: Determine the volume (in liters) of a 29.8-g sample of CH4 gas at 597 torr and 554°C.

A:

Q: Is PERIOD NUMBER ORBITALS GROUP A NUMBER VALENCE Compare your #1 and #2: Which is bigger? Why do you…

A:

Q: A 1.00 L flask is filled with 1.30 g of argon at 25 °C. A sample of ethane vapor is added to the…

A: Answer is given below

Q: name the alkenes

A: According to IUPAC nomenclature:  Select the longest continuous chain of carbon atom containing…

Q: Convert 8.6 mmole of acetaminophen to grams

A:

Q: The two compounds shown below have the same chemical formula. Which compound would you expect to…

A: Boiling point : The temperature at which a liquid converts into it's vapour and maintains…

Q: What is the molar concentration of a solution made by dissolving 53.5 mL of 5.50 M  in sufficient…

A:

Q: Equation for precipitation reaction of Ba(NO3)2(aq)+CuSO4(aq)

A: Ba(NO3)2 (barium nitrate) dissociates in the form of Ba2+ and NO32-. In the same way CuSO4 (copper…

Q: A newly made Styrofoam ball calorimeter was first calibrated by mixing 10.0 mL of 0.40 M…

A: Given: Volume of HCl = 10.0 mL Concentration of HCl = 0.40 M mass of MgO = 0.1008 g MgO (MW = 40.30…

Q: How would you calculate the Enthralpy of Formation (delta Hf) of NaCl(s) from these two reactions.…

A: Given, a) 2Na(s) + 2HCl(g) -> 2 NaCl(s) + H2(g)      ∆H = -637.4 kJ b) 2HCl(g) -> H2(g) +…

Q: 13.8 Would the indicated hydrogens give the same ¹H-NMR signal or different signals? H H (a) the…

A: This is a problem based on organic chemistry where we have to plot the structure in its chair form .…

Q: Starting from the expression for the Bohr radius of the hydrogen atom, derive an expression for nh…

A: Bohr's model of atom is based on classical mechanics. Heisenberg's model of atom considers…

Q: Why NaH or LiH are not used as reducing agents? What is their reactivity instead? Explain

A: Sodium hydride and Lithium hydride both acts as a reducing agent but they are not generally used for…

Q: How do I apply this in the answer chart that was given? in other words how do I write out the entire…

A: Here, we have to find the mass of FeCl3 in 155 mL of 0.762 M FeCl3 solution.

Q: The following equilibrium is found at some temperature: H2(g) + Br2 (g) 2HBrg) Kc = 0.745 Suppose a…

A:

Q: Calculate ΔGm for the process (C,solid,graphite,1bar,298.15K)→(C,solid,graphite,300.bar,298.15K) The…

A: dG = v dP - sdT                                                              dG = vdP        (sdT =…

Q: At a constant temperature and pressure, the reaction of 150 mL of N₂ gas with 150 mL of H₂ gas via…

A: Given data :

Q: 1.37 moles of O2 were used to combust pentane (C5H12).  The measured enthalpy of combustion from…

A:

Q: CO in a sample of 3.2 L at 0.9 atm and 25°C answer in right sig figs What is the respiration rate…

A: Ideal gas equation is PV=nRT P=pressure V=volume R=universal gas constant R=8.314JK-1mol-1 n=number…

Q: This energy diagram shows the allowed energy levels of an electron in a certain atom. (Note: the SI…

A:

Q: What are the two organic compounds required to form the ester shown here? A) ethanoic acid and…

A: Here we are required to find the Starting material required to prepare ester as well as name the…

Q: If the K, of weak base H₂X is 7.12x10, then calculate the K, of H₂X. Answer: Check If the K, of weak…

A: The relation between Ka and Kb is- Ka×Kb=Kw=1.0×10-14

Q: What is the density in (g/L) of Neon gas at 275 K and a Pressure of 1.02 atm?

A:

Q: what is dissimilar about the following molecules: cis-retinal  trans-retinal.

A: Organic compounds are made up of carbon and hydrogen. These organic compounds are called…

Q: 1. Arrange the following substances in order of increasing mass percent of carbon. a. Caffeine,…

A:

Q: 5, Sect. 3) pt pt pt pt H pt G [References] How much energy is evolved as heat when 3.2 L of water…

A:

Q: Classify the following reaction: Pb(NO3)2 + KCl → 2PbCl2 + KNO3

A:

Q: Draw the starting material needed to complete this reaction. Ignore inorganic byproducts. Select to…

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.