A 845.3-nanogram (ng) sample of sodium-24 was stored in a lead-lined cabinet for 3.117 days (d). How much sodium-24 remains? The half-life of sodium-24 is 14.96 hours. Be sure your answer has the correct number of significant figures. Ong X

Q: eq For each of the following sets of volume/temperature data, calculate the missing quantity the…

A: Charles law, According to the law, volume of a given number of moles of gas is directly proportional…

Q: 3 (a) Give the structural formulae of all the chain isomers of C5H₁2. (b) Give two position isomers…

A:

Q: A 6.00 L tank at 26. °C is filled with 11.1 g of boron trifluoride gas and 6.48 g of sulfur…

A: Volume = V = 6.00 L  Temperature = T = 26. °C  Mass of Boron trifluoride, BF3 = 11.1 g  Mass of…

Q: Which of the following characterizes an alpha ray? Choose all that apply. carries a positive charge…

A: Alpha particals are same as helium containing two proton and two neutron.

Q: A large Keq (>10) means O there are more products than reactants there are more reactants than…

A: Extent of reaction can be predicted from equilibrium constant :  Larger value of Keq shows that…

Q: Question 1 Predict the product. O O Cl... CI **** 1 *** HCI + + CI. CI O *****

A:

Q: Write the formula for a complex formed between Fe²+ and oxalate (C₂042-), with a coordination number…

A:

Q: Solution 1 contains 100.0 mL of the 3.00 M solution. Solution 2 contains 50.0 mL of the 3.00 M…

A: Given,  Solution 1:  contains 100.0 mL of the 3.00 M solution.Solution 2:  contains 50.0 mL of the…

Q: Peptides are a linear (non branched) polymer made from amino acid residues. A protein consists of…

A: Amino acid has carboxylic acid and quaternary ammonium group. so it show acidic property and…

Q: sorry but how did you get 22.4 L?

A: In the given question, we have to find percent yield and to solve this, 22.4 L is used.

Q: You have solutions of glucose (C6H12O6), sodium chloride, and ammonium phosphate ((NH4)3PO4). Which…

A: The solution with the highest boiling point will be the one with the highest concentration of solute…

Q: Determine the average rate of change of B from t=0s to t=212s. Give your answer in standard notation…

A:

Q: A student wishes to determine the chloride ion concentration in a water sample at 25 °C using a…

A:

Q: When the Pb²+ concentration is 1.47 M, the observed cell potential at 298 K for an electrochemical…

A: Answer: Nernst equation will be used to solve this problem which is shown below:…

Q: Peaks: IR: 3040, 1672, 1598, 1391, 1362, 1260, 1131, 824 cm-1 List the bond that corresponds to…

A: The interpretation of IR spectra requires the identification of characteristic absorption bands for…

Q: How many mL of a 0.218M Aqueous solution of silver nitrate, AgNO3, must be taken to obtain 7.19…

A: Concentration of aqueous solution of silver nitrate = 0.218 M Mass of salt = 7.19 grams We have to…

Q: A binary mixture with components A and B is to be separated in a distillation column to obtain 95…

A: Introduction To determine the minimum reflux ratio for the separation of a binary mixture with…

Q: Identify the stages of initiation, propagation, delay, inhibition, and termination in the following…

A: A radical chain reaction is defined as the one in which a chain of reactions occur after initiation…

Q: MISSED THIS? Read Section 6.7 (Pages 235-238); Watch IWE 6.12. Oxygen gas reacts with powdered…

A:

Q: On the subject of Sulfur: A) How many valence electrons does Sulfur have B) How many total…

A: The electronic configuration can be written by using three basic rule    1. Aufbau principle. 2. The…

Q: The rate constant for a certain reaction at 50.0°C is exactly 4 times that at 20.0°C. Calculate the…

A: The temperature dependence of a activation energy in a chemical reaction is given by the equation…

Q: Dr. A wants to dilute 30.0 mL of 2.60 M H2SO4 to a new concentration of 0.700 M.  To what volume (in…

A: As we know , Moles the solute remains same on dilution but volume of the solution increases.…

Q: ▾ Part F > 0 Ph SH NaOH

A: 1,4-addition occurs to alpha beta unsaturated ketone in presence of nucleophile occurs. Nucleophile…

Q: Identify these elements based on their locations in the periodic table. Give the symbol, not the…

A: Answer:- This question is answered by using the simple concept of identification of elements from…

Q: Which of the following compounds will form yellow or orange precipitate when reacting with…

A: 2,4-dinitrophenyl hydrazine  is reacts with carbonyl compounds (aldehydes and ketone) to give a…

Q: Which of the following pairs of species is not a conjugate acid-base pair? a. 02- and OH b. HNO2 and…

A:

Q: What kind of intermolecular forces act between a chloroform (CHCI) molecule and a carbon monoxide…

A: Chloroform (CHCl3) and carbon monoxide (CO) have different polarities and molecular shapes, which…

Q: Foods that contain all of the essential amino acids are called complete proteins. Most animal…

A: Introduction The concept of combining incomplete proteins to obtain a complete protein with all…

Q: The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 13.67 grams of…

A: mass of CoCl2 = 13.67 g molar mass of CoCl2 = 129.8 g/mol mass of water = 280.2 g = 0.2802 kg  Kb…

Q: Balance the equation by inserting coefficients as needed. equation: H₂SO4 + KOH K₂SO4 + H₂O

A: We have to balance the given reaction

Q: 3. Suggest a plausible arrow-pushing mechanism for the following transformation. The mechanism…

A: The given reaction is shown below We have to draw the arrow pushing mechanism of the above…

Q: A 11.21 g sample of Mo₂O3(s) is converted completely to another molybdenum oxide by adding oxygen.…

A: Number of mol = Mass/molar mass

Q: Indicate whether TLC (thin-layer chromatography) or column chromatography is more appropriate for…

A: we have to identify the techniques  based on the hints

Q: When the Pb2+ concentration is 7.44x104 M, the observed cell potential at 298K for an…

A:

Q: 2. What kind of results do you expect to see when the following compoun together with the given test…

A: Benedict's test is the test which shows the presence of aldehydes. This is done using Benedict's…

Q: Write a balanced nuclear equation for the following: The nuclide bismuth-214 undergoes beta…

A:

Q: 3. Predict the product of the following reaction. Et₂NH + NaNO₂/HCI → (1) Et3NH+ + Et3N-N-O (2)…

A: 3) Diethylamine reacts with NaNO2/HCl and forms N-niroso diethylamine and water  “Since you have…

Q: 3. a) Draw the following structures on a piece of paper, take a picture of them and upload the image…

A: We have to draw the structures of the given molecules

Q: Complete the following reaction and write the IUPAC names of the two products. consomsprchon, CH₂CH₂…

A: The question is based on organic reactions.     we need to identify the product formed and explain…

Q: A mixture of 0.220 moles CO, 0.350 moles H₂ and 0.640 moles He has a total pressure of 2.95 atm.…

A: Number of moles of CO(nco) = 0.220 mol Number of moles of H2 (nH2) = 0.350 mol Number of moles of He…

Q: 13.2) Draw the line bond structure for the general form of an amino acid using "R" to represent the…

A: Here we have to draw line structure of predominant form of amino acid at physiolgical pH = 7.4

Q: CHEMWORK A glass vessel contains 32 g of oxygen gas. Assuming ideal behavior, which of the processes…

A: Ideal gas equation is  PV = nRT  Where,  P is pressure of the gas  V is volume of the gas n is no.…

Q: How many rings are present in C-H10N₂? This compound consumes 3 mol of H₂ on catalytic…

A: Given molecular formula= C7H10N2 Molecular formula of alkane having 7 carbon= C7H16 -> for one…

Q: Binary compounds of alkali metals and hydrogen react with water to liberate H₂(g). The H₂ from the…

A: Answer:- This question is answered by using the simple concept of calculation of mass using the…

Q: Complete the following reaction MCPBA Or но/не CH-SCH НО

A: The question is based on organic reactions.     we need to identify the product formed and explain…

Q: The gaseous compound dinitrogen pentoxide (N₂O₅) decomposes in air to yield nitrogen dioxide gas…

A: The question is based on the concept of chemical reactions. we need to write a balanced chemical…

Q: 3. Write the mechanism (including resonance forms) for the electrophilic aromatic substitution…

A: There are three key steps in the mechanism of the reaction, 1. Generation of electrophile 2. Attack…

Q: + HNO3 H2504 NO₂ Nitrobengene

A: The question is based on organic reactions.     we need to identify the product formed and explain…

Q: 1365.34 % Transmittance 2957.53 1169.95 94

A: The question is based on IR spectroscopy. we need to analyse the spectra and identify the possible…

Q: sorry but how did you get 22.4 L/mol?

A: In the given question, we have to find percent yield and to solve this, 22.4 L is used.

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.