Difference Between Chemical and Physical Weathering.
Weathering processes crack, wear away, and weaken rocks.
While physical weathering breaks down a rock's physical structure, chemical weathering alters a rock's chemical composition.
You can learn about the types of metals there are based on their location on the periodic table. The three categories of metals are the alkali metals, the alkaline earth metals and the transition metals.
Answer: proton =11
Neutron=11
Electron=11
Valence electron=1
Explanation: proton- An element is defined by the number of protons in its nucleus
Neutron- The atomic mass number is the total number of nucleons
Electron- In an atom, the electrons spin around the center, also called the nucleus.
Valence electron- The element has a full innermost electron shell of two electrons and a full shell of eight electrons in the next shell. The third shell, which is the outermost and the valence shell, has only one electron
Hello
The balance chemical reaction is 2Al + 6HCl -à 2AlCl3 + 3H2 Assuming excess amount of HCl because it is not given Mole Al reacted = 13.5 g ( 1 mole/ 27 g) = 0.5 mole Al
Mole H2 = 0.5 mol Al ( 3 mole H2 / 2 mole Al) = 0.75 mole H2
since at STP then 1 mole gas occupies 22.414 L volume H2 = 0.75 mole (22.414 L / mol) = 16.8105 L H2
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