Sr is an inotope produced from atmosphenic testing of nuclear bombs. If naclear testing was stopped in 1960, what percentage of radioactivity due to se remained in 2000? The half-life of Stis 28.5 years

Q: Balance the following chemical equation (if necessary): FeCl:(aq) + Na2S(aq) → Fe:S:(s) + NaCI(aq)

A: The following Chemical Equation can be balanced as follows -

Q: 3. A student carried out the synthesis of aspirin as described using 3.00 g of salicylic acid and…

A: #3: Mass of salicylic acid (MW = 138.12 g/mol) used = 3.00 g  Volume of acetic anhydride used, V =…

Q: С. 1. NaOEt ELOH OEt 2. aq H*

A:

Q: (4.2, Similar to For Practice 4.2) Write balanced equation for the combustion of hexane (C6H14) in…

A:

Q: (5.7: Similar to For Practice 5.8)What is the net ionic equation for the following reaction?…

A: The ionic species which are in aqueous medium will dissociates into its ionic form.  The solid and…

Q: 1.3.How many moles of gas would be produced if 5.00g of sodium bicarbonate reacted completely with…

A:

Q: Precipitate vering precious metal tons from waste water. For ex- ple, silver ion (Ag*) can be…

A: We hsve to find the volume of NaCl to precipitate AgCl and calculate its theoretical yield

Q: Please help Thank you

A: Given information: mass of LiOH = 1.00 g   The reaction is given as follows:

Q: (4.4: Similar to For Practice 4.7) When 7.40 g SiO2 and 6.50 g C were allowed to react according to…

A:

Q: Complete, balance, and write the Q expressions: _C3H8(g) + _O2(g)   _CO2(g) + _H2O(g)…

A:

Q: A 5.276 g sample of Al-Mg alloy is digested in nitric acid (to Al*3 and Mg*²). The solution is…

A: Given: Mass of sample = 5.276 g The solution is diluted = 500 mL three 100 mL of solution titrated…

Q: Calculate the Molarity: (a.) 79 g of CuSO4 · 5H2O in 3.8 L of solution (b) 2.91 mol of CaCl2 in…

A: Molarity is defined as the number of moles of solute dissolved per liter of the solution. So,…

Q: 1.2. If you have 50.0 mL of 0.456 M Mgl2 solution, what is the concentration of iodide ions in the…

A: Given, Concentration of MgI2 solution = 0.456 M = 0.456 mol/L Volume of the solution = 50.0 mL =…

Q: b. Addition of H2O using an acid catalyst: H2SO4 H20

A:

Q: Write a balanced chemical equation based on the following description: butanoic acid, C,H,COOH(I)…

A: Given: Combustion reaction of C3H7COOH (l).

Q: Sodium hydrogen carbonate (NaHCO,), also known as sodium bicarbonate or "baking soda", can be used…

A:

Q: Nitrous oxide (N₂O) is called "laughing gas". It can be prepared by the thermal decomposition of…

A: Thermal decomposition is a process in which a substance breaks down into smaller particles using…

Q: The oxidation state of C in CO32- is ...

A:

Q: 4.49 Nitric acid is a strong oxidizing agent. State which ofthe following species is least likely to…

A: Let us calculate the oxidation number of each compound, We know that the oxidation number of oxygen…

Q: 2. Percentage Composition a. % of water in Iron (III) phosphate tetrahydrate b. % of hydroxide ions…

A: A). Molecular weight of FePO4 .4H2O = 222.88 g/mol Molecular weight of four  moles H2O = 4×18.015 =…

Q: Determine the molarity of each of the following solutions: (a) 1.457 mol KCl in 1.500 L of solution…

A: Molarity= moles of solute/volume of solution(in litres). a) Molarity of KCl solution= moles of Kcl /…

Q: The oxidation of Mn2+ by oxygen proceeds according to the following 2Mn2+ + O2(aq) + 2H₂0 2 MnO2(s)…

A: Known: ∆GfoMn2+=-362.9 kJ/mol∆GfoO2aq=0 kJ/mol∆GfoH2O=-237.2 kJ/mol∆GfoMnO2=-465.1 kJ/mol∆GfoH+=0…

Q: 5:02 Question 6 of 12 Submit Which of the following is an extensive property of the element carbon?…

A: Extensive properties are physical properties that does not depend on the amount of matter, i.e.…

Q: (5.9: Similar to For Practice 5.13) What is the oxidation state of chromium in Cr₂O7²-? O +7 O 3 O…

A: Oxidation number or oxidation state both are the same. Oxidation number or oxidation state is the…

Q: Q3: A: What mass of AgNO3 is needed to convert 3.46g of NażCO3 to Ag2CO3, and calculate the mass of…

A: A. 1 mole of sodium carbonate reacts with 2 moles of silver nitrate      105.98 g of sodium…

Q: In a reaction between copper metal and aqueous iron (III) chloride, Fe³+ is reduced to Fe²+ while Cu…

A: Atomic mass of Cu = 63.5 g/molMoalrity of FeCl3 = 1 mol/L or 1 MVolume of FeCl3 = 50 mL

Q: 5. An ore contains 36.9% of the mineral cuprite, Cu₂O, which is a source of the element Cu. How much…

A:

Q: Sodium hydrogen carbonate (NaHCO,), also known as sodium bicarbonate or "baking soda", can be used…

A: Given, HCl(aq) + NaHCO3(aq) ➝ NaCl(aq) + H2O(l) + CO2(g) Mass of NaHCO3 would needed to injust to…

Q: Determine the molarity of each of the ions present in the following aqueous salt solutions: [assune…

A: Given molarity of CuBr2 solution is 6.29 M. The CuBr2 solution dissociates into ions as shown below,…

Q: 2.7 Assume household vinegar contains 5.00% acetic acid by weight and that the density of vinegar is…

A: CH3COOH + NaHCO3→CH3COONa+ H2O + CO2 % w/w concentration = [mass of solute/mass of solvent] x 100

Q: Choose the reaction that does NOT involve a change in oxidation state. A. 2 Na(s) + Cl₂(g) --> 2…

A: Increase in oxidation number is called oxidation. Decrease in Oxidation number is called reduction.

Q: 3.57 Write a balanced equation for the following gas phase reaction (carbon is black, hydrogen is…

A: Given carbon is black hydrogen is light blue and fluorine is green

Q: When the following equation is completed and balanced, what is/are the product(s)?…

A: Given that,  solid magnesium oxide (MgO) undergoes reaction with aqueous hydrochloric acid (HCl).…

Q: Write the balanced NET ionic equation for the reaction when aqueous CS:PO4 and aqueous AgNOs are…

A: We have the equation as  Cs3PO4 (aq) + AgNO3 (aq) →Ag3PO4 (s)+ CsNO3 (aq)

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.