A radioactive isotope has a half-life of 8.00 min and an initial decay rate of 8000 Bq. Calculate the decay constant. Enter your answer in units 1/s.

Q: In a coffee-cup calorimeter, 140.0 mL of 1.3 M  NaOH and 140.0 mL of 1.3 M  HCl are mixed. Both solu...

A: In this whole process, the heat given out by the reaction is gained by the solution and as a result,...

Q: The graph below is a plot of the distribution or fraction of molecules having certain kinetic energi...

A: The plot of the distribution or fraction of molecules having certain kinetic energies is given as, ...

Q: Calculate the pH and percent ionization of hydrofluoric acid at these concentrations: (a ) 0.60 M, (...

A: pH of a solution is given by, pH = -log [H+] Higher the pH value lower will be the concentration of ...

Q: A chemical reaction is run in which 633 Joules of work is done on the system and the internal energy...

A: Given: Work done = +633 J ( work is done on the system) Internal energy = +191 J  

Q: what are the skeletal drawings for : 5-ethyl-1-iodo-7-methylnonane 1,1-dibromo-3-propylcyclopentane

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Q: 6. How is steel manufactured by acid bessemer process? What are the advantages anddisadvantages of t...

A: The acid Bessemer process consists essentially of blowing air through molten pig iron to oxidize the...

Q: A chemist makes 260. mL of iron(III) bromide (FeBr, working solution by adding distilled water to 16...

A: Given : concentration of stock solution of FeBr3 = 1.88 M Volume of stock solution = 160 mL And conc...

Q: What mass in grams of NaCl would need to be added to 5451 g of water to increase the boiling tempera...

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Q: In an organic chemistry laboratory, 3 students were given an unknown compound the signal at 2,900 cm...

A: Answer is d.) a C-H bond absorbing energy to move to a higher energy vibrational state.

Q: What is the osmotic pressure, in torr, of a solution formed by dissolving 0.2516 g of ammonium perch...

A:

Q: Calculate the formula mass of Cas (PO4)2 Atom Number of Atoms Mass number Total mass number of each ...

A: Given : mass of Ca = 40.0 u mass of P = 31.0 u mass of O = 16.0 u

Q: In a coffee-cup calorimeter, 100.0 mL of 1.1 M NAOH and 100.0 mL of 1.1 M HCl are mixed. Both soluti...

A: Given : Concentration of NaOH = 1.1 M Concentration of HCl = 1.1 M Volume of NaOH solution = 100.0 m...

Q: What is the molarity of a 3.468 molal solution of iron(III) chloride with a density of 1.365 g/mL?

A: Given: The molality of iron(III) chloride is 3.468 m The density of iron(III) chloride is 1.365 g/mL...

Q: Kc = 64 for the reaction N2(g) + 3H2(g)  2NH3(g) at a certain temperature. Suppose it was found that...

A:

Q: A helium-filled weather balloon has a volume of 603 L at 16.9°C and 755 mmHg. It is released and ris...

A: Pressure, P1 = 755 mmHg   Pressure, P2 = 534 mmHg    Temperature, T1 = (16.9+273)K = 289.9 K Tempera...

Q: A 1.20 L weather balloon on the ground has a temperature of 25.0°C and is at atmospheric pressure (1...

A: Given, V1=1.2L  T1=25+273=298K  P=1 atmV2=1.8L T2=? P=0.760 atm

Q: Organic chemistry : hydroxyl compound Please give the correct IUPAC name of the following alcohols ...

A: Rules to write an IUPAC name are given below: Identify the parent chain. The longest carbon chain i...

Q: 10. A sample of pig iron contains 3.4 % C, 2% Si, 2% P. The remainder being iron. Discussbriefly how...

A: Steel has high tensile strength. It is one of the most important construction materials. It is used ...

Q: q 4 chem hw

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Q: 8) Consider the neutralization reaction described by the equation: HPO, (aq) + H,O (1) = H,PO, (aq) ...

A:

Q: Balance half-rxns in base: red: 2e + H,0 + ClO → Cl- + 20H- 10 OH + S,0,2-→ 2SO,²- + 5H,0 + 8e ox:

A: Answer: B. 2 Balanced half reaction is, 4 ClO-   +    S2O32-    +   2 OH-       ---->      4 Cl- ...

Q: How could you change the solvent so that the Rf values for C and U would be large liek that for A? (...

A: Rf value- Distance traveled by the compoundDistance traveled by solvent fromt Rf α 1Distance travele...

Q: What is the effect on the peak corresponding to an acid component when the pH of mobile phase decrea...

A: Mobile phase pH is essential when analytes comprise, Acidic Basic Both functional groups. The chan...

Q: 14

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Q: Hydrocarbons, compounds containing only carbon and hydrogen, are important in fuels.The heat of comb...

A: The question has two subparts: First, we need to write the Chemical Equation for the Combustion of ...

Q: 1.A compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an extinction coefficient (ε) of 23,150 at...

A: Answer to Question No:1 The energy of a photon can be calculated by the famous formula- E=hcλwhere, ...

Q: Use the following information to answer #7 I'm stuck

A: Given data,Temperature=100oC=100+273=373KPressure=1atmMass of condensed liquid=3.83gVolume=154mL=0.1...

Q: A nonvolatile solute is dissolved in benzene so that it has a mole fraction of 0.265. What is the va...

A:

Q: A gas expands against a variable opposing pressure given by P = 10/V atm, where V is the volume of t...

A: Calculation of work done: ∫dW=∫10100-PdVW=-∫1010010VdVW=-10×ln V10100W=-10×ln 100-ln10W=-23.026 atm ...

Q: found to be 444 kg. The bottom stream product has mass fraction of A equal to 70%. What is the mass ...

A: Answer: Mass of A in top product is 161.7600 kg

Q: Calculate the viscosity (micropoises) of molecular oxygen at 273.2 K and 1 bar. The molecular diamet...

A: We have η=5π16kTπm12mπd2............1 Here, m=mass, d=molecular diameter,  T=temperature Value of π=...

Q: Problem Solving   2Cu      +       S     --->  Cu2S   How many moles of S are needed to react wi...

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Q: Outline a feasible synthetic route for the following:

A: A Grignard reagent is vastly used in organic synthesis to introduce a new C-C bond in a molecule. Du...

Q: At a certain temperature the following data were collected for the reaction 2ICl + H2  I2 + 2HCl. ...

A: A) Let, Rate= K [ICl]x [H2]y x and y are order of reaction with respect to ICl and H2 respectively....

Q: Calculate the pH of a 1.8 x10-2 M Ba(OH)2 solution.

A:

Q: In a coffee-cup calorimeter, 100.0 mL of 1.1 M NAOH and 100.0 mL of 1.1 M HCl are mixed. Both soluti...

A: given:  Volume of NaOH = 100 mL volume of HCl = 100 mL total volume of solution = 100 + 100 = 200 mL...

Q: Giving at least 2 reasons, predict whether [Co(OH2)6]2+ or [Co(NCS)4]2- has a higher Kstab.

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Q: In the laboratory, a student adds 45.1 mL of water to 10.6 mL of a 0.773 M hydrobromic acid solution...

A: Given : Initial concentration of hydrobromic acid i.e HBr = 0.773 M Initial volume of HBr solution =...

Q: Using atomic structure, please explain why sodium is more likely to form ionic bonds rather than cov...

A: The atomic number of carbon is six and its electronic configuration is as follows: The atomic numbe...

Q: 81. The following data were obtained for the reaction 2A + B →C where rate = d{A]/dt %3D [A](M) [B](...

A: The rate of a reaction is directly proportional to the concentration of reactant raise to the power ...

Q: Answer #3 I would like to check my work please show work

A: Charles law states that the volume of an ideal gas is directly proportional to the absolute temperat...

Q: Answer the following:1. Compute the weight (g) of solute needed to make the solutions listed below:a...

A: Since we only answer 1 question in case of multiple question, we’ll answer the first question as the...

Q: Trial 1 Trial 2   Initial Buret Reading 0.05 mL 0.02 mL   Final Buret Reading 25.25 mL ...

A: The molarity of acetic acid in the vinegar can be calculated using the formula: No of moles of aceti...

Q: 3. At 100°C, the gaseous reaction A → 2B + C is observed to be first order. On starting with pure A,...

A: Order of the reaction tells about the rate of the reaction and the concentration of all the species ...

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.