A piece of wood and a piece of steel are at the same temperature; however, the steel feels hotter. This is because the steel has
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Answer: Mercury-194 is an unstable isotope and hence is radioactive.
Explanation: Mercury-194 is an isotope of mercury, having formula
Number of protons in this isotope = 80
Number of neutrons in this isotope = 114
This isotope is radioactive in nature and under decay process by Electron Capture.
Electron capture reactions are the reactions in which a proton in a nucleus absorbs an electron and convert it into neutron. The resulting nucleus will have a decreased atomic number and same atomic mass.
Reaction for electron capture of mercury-194 follows:
<u>Answer:</u> The actual yield of the product is 38.57 g
<u>Explanation:</u>
The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:
......(1)
We are given:
Given mass of Na = 17.25 g
Molar mass of Na = 23 g/mol
Putting values in equation 1, we get:
For the given chemical reaction:
By stoichiometry of the reaction:
2 moles of Na produces 2 moles of NaCl
So, 0.75 moles of Na will produce = of NaCl
We know, molar mass of = 58.44 g/mol
Putting values in above equation, we get:
The percent yield of a reaction is calculated by using an equation:
......(1)
Given values:
Percent yield of the product = 88 %
Theoretical value of the product = 43.83 g
Plugging values in equation 1:
Hence, the actual yield of the product is 38.57 g