The phenomenon that naturally warms the earth's lower atmosphere and surface is called the greenhouse effect.
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Answer:
The reaction can produce 287 grams of iron(II) carbonate
Explanation:
To solve this question we must find the moles of iron(II) chloride that react. Using the chemical equation we can find the moles of iron(II) carbonate and its mass -Molar mass FeCO3: 115.854g/mol-
<em>Moles FeCl2:</em>
1.24L * (2.00mol / L) = 2.48 moles FeCl2
As 1 mol FeCl2 produce 1 mol FeCO3, the moles of FeCO3 = 2.48 moles
<em>Mass FeCO3:</em>
2.48mol * (115.854g / mol) =
<h3>The reaction can produce 287 grams of iron(II) carbonate</h3>
Answer;
c.electrons move from the wool to the rod.
Explanation;
-Atoms are generally neutral (have the same number
of protons as electrons). Substances lose electrons to become
positively charged, while other substances gain electrons to become negatively charged.
-When a plastic rod is rubbed with woolen
cloth or wool, a transfer of electrons occurs (from the wool to the rod). The rod gains electrons; thus, it
is negatively charged.
Answer: The ionization energies of anions of group 17 elements will be higher than for neutral atoms of the same group.
Explanation:
The ionization energy is the energy required to remove an electron from the valence shell of an isolated gaseous atom of an element.
Ionization energy depends on:
a) Electronic configuration of an element: If on losing or gaining of an electron an element attains noble gas configuration or half filled stability then it will be difficult to remove the electron from stable configuration.
b) size of an element :larger the size more lesser the effective nuclear charge on electron thus lower the ionization energy.
Group 17 elements have 7 valence electrons and thus on gaining one electron , they attain stable noble gas configuration and thus the ionization energy will become higher.
