A sample of a newly discovered element, West Virginium, has a half-life of 190 years.  How long will it take for a 163 mg sample to decay to 97.8 mg?  years (round to one decimal place)

Q: Calculate the pH of a buffer solution that consists of 0.45 M NH, and 0.35 M NH CI. (pkg of NH3 =…

A:

Q: 4-44 Draw the important resonance forms of the following free radicals. (a) CH₂=CH-CH₂ (b) (d) (e)…

A:

Q: Study this chemical reaction: Al(s) + FeBr3(aq) → AlBr3(aq) + Fe(s) Then, write balanced…

A: The addition of electrons or decreases in the oxidation state is known as a reduction reaction and…

Q: Give the IUPAC name for the following carboxylic acid. Cl CI O CH3-CH-CH₂-CH-C-OH

A: Rule of IUPAC- 1)Choose the longest carbon chain as parent chain. 2) Numbering start from those side…

Q: How is gamma radiation best described?  A. As very small wavelength and low frequency. B. As…

A:

Q: For the following reaction, 0.343 moles of sulfuric acid are mixed with 0.223 moles of calcium…

A: Given :- Sulfuric acid (aq) + calcium hydroxide (s) → calcium sulfate (s) + water (l)  No.of moles…

Q: Are each of the following 0.100 M aqueous solutions: Acidic, Basic, or Neutral? 1. KCI [Select] 2.…

A: Given salts: KCl NH4Br Na2CO3 KClO (CH3)3NHCl We have to find whether the 0.100 M aqueous solution…

Q: The Ksp for CsClO4 is 0.00747. Determine the solubility for CsClO4 in M. Report answer with four…

A:

Q: Measuring the change in temperature versus time upon addition of a hot metal specimen to 9.53 mL of…

A: The heat absorbed by the water is calculated using the formula- q=m×C×∆T Where m is the mass of…

Q: Following is the Haworth structure of a disaccharide. Identify the type of glycosidic bond in this…

A:

Q: What products would you expect from the following reactions? x.^²- (b) OMe <& OMe (c) (d) H. H

A: There are multiple questions asked and first question also contains multiparts. So as per the…

Q: 4- The equilibrium constant for the reaction A (g) B (g) is 10. A reaction mixture initially…

A: Given:  Equilibrium constant for reaction, Keq = 10  Initial concentration of A = [A] = 1.1 M…

Q: What are the products from the following reactions? Please help with d-h

A:

Q: What are the products of the following ester base hydrolysis (saponification) reaction? 0 O O sodium…

A:

Q: Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are…

A: Here we have  to predict  in which  of the following reactions  precipitation occur .

Q: When a student heated and decomposed 18.1 grams of sodium chlorate, 7.56 grams of gas were obtained.…

A:

Q: rovide the correct one-letter abbreviation for the following amino acid: O || H₂N-CH-C-OH | H Q ARN…

A:

Q: calculate the energy absorbed when an electron in a hydrogen atom undergoes a transition from n=1 to…

A: Rh is Rydberg constant which is equal to 1.0975 × 10^7

Q: What are diastereomers? a. Constitutional isomers. b. Molecules with only one chiral center. c.…

A:

Q: Name the following molecule: c C c-c-c=c-c f C

A: Since,Rule of IUPAC-1) Longest chain as parent chain.2) Numbering start from those side where more…

Q: Will a precipitate form when 20.0 mL of 1.8 x 10-3 M Pb(NO3)2 is added to 30.0 mL of 5.0 x 10-4 M…

A:

Q: If dissolving 0.5175 g of KHP in 50 mL of water requires 34.90 mL of NaOH solution, what is the…

A: Since, Molarity is the number of moles of solute dissolve in one litre of the solution. Thus,

Q: For the following mechanism, select the order of arrow pushing patterns that would be needed to…

A:

Q: How many secondary carbons are in the following hydrocarbon molecule? 513 C C 1 U~√-o C 1 C-C с…

A: Since, In hydrocarbon, secondary carbon are those carbon which is directly attached with two other…

Q: Measuring the change in temperature versus time upon addition of a hot metal specimen which has an…

A: GivenVolume of water = 10.17 mL = VInitial temperature of water = Tw = 27.03°CGiven Y = -0.121x +…

Q: Which organic compounds is not a constitutional isomer of octane? 2,2-dimethyl hexane…

A: Constitutional isomers are the structures having same molecular formula but differ in arrangement of…

Q: A gas-filled weather balloon with a volume of 55.0 L is held at ground level, where the atmospheric…

A:

Q: A titration was performed where a strong acid, HCI, was titrated with a strong base, KOH. Use the…

A: a) The equivalence point is that point in titration where acid and base are completely neutralized.…

Q: How many secondary carbons are in the following hydrocarbon molecule? C-C- с C13 Umu. С с J-U L с -…

A: A carbon atom that is bounded to two other carbon atom is a secondary carbon atom...designated by…

Q: Help with mechanism? НО. (4R,8S, 12S)-17 1) Jones reagent Acetone, R.T., 96% 2) BF3.Et₂0 MeOH, R.T.…

A: We have to draw the mechanism of the given reaction. Introduction: Jones oxidation and…

Q: QUESTION 13 How many grams of cobalt may be formed by the passage of 3.32 amps for 1.14 hours…

A:

Q: lacmillan Learning Carbohydrates serve as a vital source of chemical energy to the human body.…

A: 1 KJ = 0.239 Kcal  So  119 KJ = 119 X 0.239 Kcal             =  28.44 Kcal

Q: a weak Dase fal cigarette smoke. Pyridine ionizes in water as follows: C5 H5N(aq) + H₂O(1) C5H5NH+…

A: Pyridine is weak base hence it dissociated feabily in aqueous solution

Q: Give the proper rotation symmetry element depicted by each of the diagrams shown below. (a) (b) (c)

A: Rotation Axis of symmetry can be represented as Cn  n = Order of axis  n = 360/θ  θ = angle between…

Q: Macmillan Learning An aqueous solution containing 7.11 g of lead(II) nitrate is added to an aqueous…

A: We are asked to write a balanced chemical equation for the given chemical reaction.

Q: of 16 Macmillan L It took 835.5 J to raise the temperature of a sample of water from 17.5 °C to 33.5…

A:

Q: A chemist adds 1.55. L of a 0.25 mol/L iron(III) bromide (FeBr3) solution to a reaction flask.…

A:

Q: Set #1: CH3CH₂CH₂CCH3 a Set #2: CH3CH₂CH₂CH3 CH3CH₂CH₂CH₂CH CH₂CH2CH₂CH₂ b Shown are 4 isomeric…

A: Different types of peaks in NMR shows different environment around that atom.  Protons with same…

Q: EXPLAIN 3-5 sentences 1. Compared to esters or acid anhydrides, why do acid chlorides have the…

A: As per guideline i am doing frst one complete question. .

Q: Which statement correctly describes the relationship etween volume (V) and temperature (7)…

A:

Q: Consider the reaction N₂(g) + O₂(g) 2NO(g) Using standard thermodynamic data at 298K, calculate the…

A: Recall the given reaction,                            N2 g  +  O2 g  →  2 NO gWe have to calculate…

Q: 1. If the hydrogen ion concentration is a measure of the strength of an acid, how much stronger is…

A:

Q: Use the information in the ALEKS Data tab to sort the following chemical species by oxidizing power.…

A: -&gt; Charge on monoatomic species is called oxidizing power .

Q: on 15 of 16 Ⓒ Macmillan Learning Carbohydrates serve as a vital source of chemical energy to the…

A: In the given question we have to convert energy value from kilojoules (kJ) to kilocalorie (kcal).…

Q: An atomic anion with a charge of -1 has the following electron configuration: 1.s²2s²2p 6 What is…

A: Since, Electronic configuration represent the electron present in orbital in which way. Arrangement…

Q: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s), ΔH = -1652 kJ (d) How much heat is released when 11.40 g Fe and 2.13…

A: In the given question we have to calculate the heat released during the reaction,  First of all, we…

Q: A H3PO4 H NH4+ II. H₂PO4 [Select] III. CO32- [Select ] B IV. NH3 [Select ] H₂SO4 I NH3 C H₂PO47 J…

A: Since,Conjugate acid is obtain by adding hydrogen ion.Conjugate base is obtain by removal of…

Q: A student performs this experiment and determines that 1.12 grams of CO2 was lost, but based on…

A:

Q: 6Ag + 2MnO4+H₂0-2MnO2 + 3Ag20+ 2 OH- For the above redox reaction, assign oxidation numbers and use…

A:

Q: 3) Rank the non-metal anions from the least, to the most basic. Te-2, P-³, As-³, F, CI-

A:

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.