- When 2.6 grams of acetylene is combusted in an amount of oxygen (8 grams), The result is . ............... (a) Accompanied by a smoked flame (b) With enough heat to weld metal (C) Incomplete combustion (d) Carbon dioxide, water vapor and carbon a b d.

Q: 5 g of anhydrous strontium nitrate is added to a beaker and exposed to the air. After several hours…

A: The percentage of water in hydrated sample is given as : Percentage of water = ( mass of water /…

Q: 22. A mixture of natural gas and air is stable at room temperature. However, if a piece of metallic…

A: The substances that are employed to produce heat along with the liberation of other gases are termed…

Q: The nuclide thorium-230 undergoes alpha emission. (Use the lowest possible coefficients.) +

A: Thorium-230 undergoes alpha emission to give Radium-226.

Q: Use the following information For as needed for questions 4,5 nd 6 :for the following reaction t 250…

A: ∆ G = -nF Eocell

Q: Calculate the mass equivalent of the energy released by the complete combustion of 2 mol of methane…

A: Given, Number of moles of Methane = 2 mole  Energy released for the combustion of methane = 1780 KJ…

Q: 2. For each of the following situations, determine if an endothermic or exothermic reaction/process…

A: Exothermal reactions are energy-releasing reactions or processes, normally in heat or light form. In…

Q: Complete and balance the following equations. U

A: Balanced reaction has same number of atoms of elements on reactants and products side

Q: Calculate the mass (in grams) of O2 that isproduced by photosynthesis when 2.49 × 104 kJ of solar…

A:

Q: The cleanup of threat of toxic nuclear isotopes can be permanently eliminated by simply storing it…

A: Toxic nuclear isotopes cannot be permanently eliminated. This is temporary process.

Q: Given that natural sample of iron has isotopes 28Fe54, 28Fe58 and 28Fe57 in the ratio of 5%, 90% and…

A:

Q: Calculate BE/A for 238U. (Most of uranium is 238U .) Note that 238U haseven numbers of both protons…

A: To calculate the binding energy per nucleons of 238U

Q: The combustion of hydrogen to form one mole of gaseous water has been experimentally determined to…

A:

Q: This is its nuclear decay: Once an organism dies, the ratio of C-14:C-12 changes, The most accurate…

A: There are two nuclear process in nuclear Chemistry, nuclear fission and nuclear fusion. Nuclear…

Q: 38 when two atoms of ^2 H are fussed to form one atom of ^4 He, the total energy is 3.83 x 10^-12 J.…

A: E = m × c2  On substituting the values into it, we get ; 3.83 × 10-12 J = m × (3.0 × 108)2  m =…

Q: The average mass of an oxygen atom is 5.3x10^-26 kg. Calculate the kinetic energy of a mole of…

A: Given: Mass of Oxygen atom= 5.3 x 10-26 kg Speed = 400 m/s  To calculate: Kinetic energy of 1 mole…

Q: Was radioactivity invented during World War II in the 1940s by atomic scientists?  Justify your…

A: NO.....  The full information is...  In one of the most well-known accidental discoveries in the…

Q: Calculate the mass equivalent of the energy released by the complete combustion of 5 mol of methane…

A: Introduction :  Mass equivalent energy can be defined as the mass which is the form of energy that…

Q: Bucks McGee, after being poisoned, is currently being treated in the hospilal antidote- the chemical…

A: Antidote compound name = Prussian Blue The molecular weight of the antidote compound = 858.9 g/mol…

Q: Visited (Atomic masses: iron-56 = 55.9349 amu; hydrogen-1 = 1.0078 amu; mass of neutron = 1.0087…

A:

Q: Consider the balanced reaction 3 A + 5 B → 3 C + 8 D. If 4.647 grams of A (MW = 35.35) are…

A: The mole concept is widely used in the field of chemistry to visualize the concentration of the…

Q: 2447CI, will undergo a electron capture O electron emission

A: Write reaction when undergo, 1)Electron capture 2)Electron emission

Q: Which equation states the law of conservation of energy? O A. AE = q + w O B. E = mc- O C. E = /2mv2…

A: Law of conservation of energy: According to law of conservation of energy "energy neither be created…

Q: 5. How many grams of Calcium will it take to replace 1 gram of Hydrogen?

A: No of moles = Mass / Molar mass

Q: Predict the products of the reaction.

A: Given (1R,3R) 3-methyl-cyclohexane bromine when undergoing reaction with a strong base as CH3COO-…

Q: The element americium is used in smoke detectors. It is radio active and has a half life of 462…

A: All natural and artificial radioactive decays follows first order kinetics The integrated rate…

Q: The normal process occurring on Earth that warms its surface and the lower atmosphere is called A.…

A: The correct option is (D.) the green house effect .

Q: (a) Give the names and chemical symbols for the three isotopesof hydrogen. (b) List the isotopes in…

A: (a) Hydrogen exists in three isotopic forms. The names and the symbols of the isotopes of hydrogen…

Q: Magnesium reacts explosively with oxygen to form magnesium oxide. Which is NOT true of this…

A: The incorrect statement among the given has to be given,

Q: What is the energy change when the temperature of 14.6 gaseous xenon is decreased from 38.7 °C to of…

A: Given information:Mass of xenon gas = 14.6 gInitial temperature = 38.7 oCFinal temperature = 23.5…

Q: e polonium-214 ndergo vest nossible coefficients.

A: In the nuclear reaction,  Mass number and atomic number is same in both sides

Q: For the following reaction, what is the energy released, in GJ/mol? (1 GJ = 1E9 J) Use 2.998E8 m/s…

A:

Q: How to calculate speed of cathode ray when you know p.d.

A: Answer - Cathode rays - Cathode rays (also called an electron beam or an e-beam) are streams of…

Q: n your own words, explain the "Law of Mass Action".

A: Given : We have to explain law of mass action.

Q: The reaction of A to produce B by the reaction 2A + C → B is exothermic with a ΔH = -345 kJ.  If…

A: First we would calculate moles of A and energy released for thise moles of A.  Then we use energy…

Q: 4) How many years old is a person who has lived for 1 billion seconds?

A: Given, A person who has lived 1 billion seconds the age of a person is:

Q: What weight (in milligrams) of potassium

A:

Q: the measured EA of Na is -53 KJ/mol. What is the physical meaning of the fact that the EA is a…

A: EA means the electron affinity .  The amount of heat is released when 1 electron is added to the…

Q: Why does it stop there?  Why doesn't it go on to uranium or neptunium?

A: Given:It is given that,"High mass stars fuse heavier and heavier elements, starting with Hydrogen,…

Q: 28. While synthesizing their ferrofluid a student is short on time and decides to pour 50 mL of…

A: Ferrofluids can defined as the colloids suspensions of magnetic nanoparticles. They tend to…

Q: Suppose 4.57 g of C5H12 completely combusted. How many kJ of energy would be released? (207 kJ) е.

A: Given that, On combustion of 10g of C5H12 , 453 KJ of heat released.

Q: It takes 1.25 kJ of energy to heat a sample of pure silver from 10°C to 12.3 °C. Calculate the mass…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: 208 a. 81TI 208 82Pb + ? 106Sg→ 42H +? → °-1ß + 21483Bi b, 263 с. ? '83Bİ d. 8738ST → °oy + ? ->

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…