Interconverting amount of radiðãctive děcay and half life Tin-129 is radioactive and has a half life of 2.23 minutes. What percentage of a sample would be left after 8.00 minutes? Round your answer to 2 significant digits. x10

Q: Which of the following cannot be used as solvent for steam distillation? ethanol water hexane…

A: Essential oils can be extracted by using solvents such as petroleum ether, methanol, ethanol or…

Q: 13. (Entropy) For each of the following processes, tell whether the entropy of the universe…

A: We have to tell about the entropy change of the universe for the given process.     We know that…

Q: Without reference to any data tables, choose which member of following pairs has the lesser…

A: (27) H2O(l) or H2O(s) B has the lesser amount of entropy.

Q: At 25°C the rate constant for the first-order decomposition of a pesticide solution is 6.40 x 10-3…

A:

Q: 14. (Enthalpy and entropy of reaction from AH°; and S°) Given the following reaction 4HCI(g) + O2(g)…

A: Given reaction : 4HCI(g) + O₂(g) → 2Cl₂(g) + 2H₂O(g)

Q: Он NO2 CH2CH3 SO3H (а) (b) (с) (d) (е)

A: ->If Electron donating group attached to the benzene ring then it increases the electron density…

Q: Which of the following statements about an -NH2 group is FALSE? a. meta director b. activator…

A:

Q: 1. Which EARS reaction is shown above? 2. What is absolute configuration about the chirality carbon?…

A: Dihydroxyacetone phosphate to glyceraldehyde 3-phosphate is a reversible reaction.

Q: Identify the following as an a or ß form and draw the Haworth structure of the other anomer. CH2OH…

A:

Q: CH2-0 CH-O CH2-0-P-0-CH2-CH2-NH3*

A: Yes , given structure of phospholipid can work as a buffer.

Q: What is the standard molar entropy change of the following reaction? 8 NH3(g) + 10 O2(g) → 8 NO(g)…

A: Entropy is a measure of the randomness of the system. The entropy change in a chemical reaction can…

Q: A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard…

A:

Q: A substance that is capable of acting as both an acid and as a base is autosomalcon O conjugated…

A: Choose the correct option of the following--

Q: Jhemerlyn was tasked to determine the solubility classification of an organic compound. She found…

A:

Q: H2N-CH-C- H,N-CH-c-OH H,N-CH-C- -OH -OH II III CH2 CH2 CH-OH ČH3 CH3 OH H,N-CH-C-OH H2N-CH-C-OH CH2…

A:

Q: Give the major product that is formed when the primary hydroxyl group of the following…

A: We have to predict the major product.

Q: of effusion of a given gas is i al to the square root of its mo cant volume and fixed amount xerted…

A: Gas law's are applicable for ideal gases By combining all gas laws we can find the over all gas…

Q: Compound A Compound B HO Он NH2 HO он H3C. CH3

A: The given compounds: 1(A) 1(B) 2 (A) 2 (B) 3(A) 3(B) These compounds have to be identified.

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. How long would it take a sample to…

A: Given that -  Hydrogen-3 is tritium which is a radioactive isotope with half life = 12.3 years…

Q: Laboratory Task Based on the video lecture on alcohol, phenol, and ether, and previous notes on…

A: Diethyl ether is an organic compound with an ether functional group: attached to ethyl groups…

Q: 1) Which one of the following compounds is expected to show prominent fragment that has a m/z -15…

A:

Q: The freezing point of a 0.21m aqueous solution of H2SO4 is -0.796oC. i = 2.04 b. Is the solution…

A: Given, Molality (m) = 0.21 m □Tf = 0.796 °c Kf = 1.86 °c/m □Tf = i×Kf ×m i = 0.796/0.21×1.86 =2.01

Q: Which of the following could DECREASE the amount of the recovered crystals in the purification by…

A: Steps of Recrystallization :  1) First dissolve the sample in proper solvent in hot condition till…

Q: Energy (kJ) Energy (kJ) Why do catalysts increase reaction rate? Catalyst Effect on Reaction Path…

A:

Q: calculate calorimeter constant to 2 significant figures

A: Given that -  Temperature of cold water = 3.0°C  Temperature of hot water = 89.0°C  Volume of cold…

Q: a) H2N-CH-C-OH This amino acid contains a hydrophilic side chain. Нас— он b) H2N- -CH- -ċ-OH This…

A: Given:

Q: Calculate the pH of each of these solutions.  is the solution acidic, basic, or neutral ?.        a.…

A:

Q: ) + B(g) → 2C(g) 0.36 at 150°C. If 1.00 mol of A is added to 1.00mol of B in a 2.00-L container at…

A:

Q: Estimate nitrate and CO2 removal in a lake, if P removal from euphotic zone is observed to be 6 µg/L…

A:

Q: When a solution of dithionite ions (S2O42–) is added to a solution of chromate ions (CrO42–), the…

A: We have find out the a) net ionic equation for this reaction and (b) How many grams of sodium…

Q: Identify the isoprene units in the following terpene

A: Identify the isoprene units in the following terpene---

Q: Consider the reaction: 3A+4B -> 3C  What is the limiting reactant if 1 mole of A is allowed to…

A:

Q: Answer each question in 5 to 10 sentences only.  1. Why are the groups in the periodic table…

A: In Periodic table , all the elements are classified as A block and B block elements. A block…

Q: In hot air balloons, what gas law is utilized?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 14. Consider the following compound: O H HO-C-CH-CH-C-N-H Which of the following functional groups…

A: The organic compound is formed by two main elements, carbon, and hydrogen. The specific group of…

Q: Include the following terms: • solute, intracellular fluid, extracellular fluid, simple diffusion,…

A:

Q: 5. Explain the principle of 'Using Safer solvent taking suitable example of a conventional reaction…

A: In Green Chemistry, the principle of safer solvents promotes the use of safer solvents and…

Q: Which ions are unlikely to form colored coordination complexes in an octahedral ligand environment?…

A: Colour for the complex is arise due to electronic transition. If no any transition possible compound…

Q: A graphite furnace atomic absorption spectrophotometer (AAS) was used to determine the arsenic (As)…

A: Given data Concentration Absorbance 2 0.17 4 0.28 6 0.48 8 0.53 10 0.72

Q: Identify one amino acid from each of the following categories:

A:

Q: Compute the ionization constant

A:

Q: What is the standard molar entropy change of the following reaction? 8 NH:(g) + 10 O:(g) 8 NO(g) +…

A:

Q: It is suggested that the decomposition of nitrogen pentoxide dissolved in an organic solvent is a…

A: A question based on kinetics of reaction in solution that is to be accomplished.

Q: What is the theoretical yield in moles of solid aluminum fluoride if 3.0 moles aluminum metal react…

A: Aluminum reacts with fluorine to form aluminum fluoride. The equation for the balanced chemical…

Q: She performed a normal phase chromatography to separate the components of an extract. She then…

A: Thin layer chromatography (TLC) and Rf factor

Q: A reaction 3X+Y 2Z is started with 0.87 M Z and no X or Y. With the aid of the ICE table provided…

A:

Q: V. A statement of Assertion (A) follówéd by ä štatement Reason (R) is given in the following…

A: The amount of heat either released or absorbed in a reaction is known as the enthalpy of reaction.…

Q: Would you expect myoglobin to be more or less soluble in water than a protein composed primarily of…

A: Myoglobin is more soluble in water. Because the non-polar amino acid side chains on the surface…

Q: What ion would stronium replace in hydroxylapatite?

A: We have to tell the ion which is replaced by stronium in hydroxylapatite.

Q: 4) Draw all constitutianal isomers formed bey mono ch lorinatom. Cla ho

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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.