Answer:
The daughter nuclide is selenium; 76:34 Se
Explanation:
The complete question is as follows;
is desired to determine the concentration of arsenic in a lake sediment sample by means of neutron activation analysis. The nuclide 75:33 As captures a neutron to form 76:33 As, which in turn undergoes beta decay. The daughter nuclide produces the characteristic gamma rays used for the analysis. What is the daughter nuclide?
solution:
Please check attachment for decay equations and explanations
The same amount of energy is released when they recombine.
<h3>How much energy is released when water is formed and split?</h3>
The decomposition of water:
H₂O → H₂ + O₂ Δ = +285.8 kJ/mol
The formation of water:
H₂ + O₂ → H₂O Δ = -285.8 kJ/mol
Endothermic water decomposition requires 285.8 kJ of energy input per mole of degraded water. One mole of water is created from hydrogen and oxygen in the opposite reaction, which is exothermic and produces 285.8 kJ of energy. The energy level is the same, but the energy change sign is different.
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If,105.5mg sample of a white substance, suspected of being cocaine (C17H21NO4), forms 279.3mg of CO2 and 66.46mg of water on combustion, then we can conclude that the white solid is cocaine.
<h3>Types of Cocaine:</h3>
1. Pure Cocaine :
- Pure cocaine is type of crystalline powder which is derived from the leaves of the coca plant.
- Pure cocaine are very rare in the United States of America.
The product is often passes with the help of the supply chain.
2.Crack Cocaine :
- Crack cocaine are small in size and is a kind of rocky material.
- Depending upon it's purity they varies in color.
- Crack cocaine is generally used for smoking.
- it is also known as freebase cocaine.
3. Synthetic Cocaine :
- Synthetic forms of cocaine (also called as fake cocaine) are generally used as medicine in local areas.
- This product is looks like powdered material or crack cocaine.
4.Black Cocaine :
- Black cocaine is a chemically an another version of cocaine that is used to evade detection in body.
- It is usually a combination of cocaine, charcoal and some other chemicals.
- Black cocaine are not commonly used.
<h3> What is Combustion reaction?</h3>
A combustion reaction is a type of chemical reaction in which generally a fuel undergoes an oxidation by the reaction with the help of an oxidizing agent, which ,results in release of energy.
- it is generally an exothermic process.
- It reacts between oxidents and fuels.
- Solid fuels such as coal and wood are generally undergoes an endothermal pyrolysis.
- It results in the creation of fuels.
- The combustion of that types of gaseous fuels is generally used to provide the heat required which is required to accelerate more combustion.
Thus from the above conclusion we can say that, If,105.5mg sample of a white substance, suspected of being cocaine (C17H21NO4), forms 279.3mg of CO2 and 66.46mg of water on combustion, then we can conclude that the white solid is cocaine.
Learn more about Cocaine here: brainly.com/question/944545
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Mc (Moscovium) has atomic number is 115
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