Answer:
The copper oxide can then react with the hydrogen gas to form the copper metal and water. When the funnel is removed from the hydrogen stream, the copper was still be warm enough to be oxidized by the air again.
Explanation:
Answer:
This is what could happen:
Explanation:
When lava meets ice, the resulting mess can cause flooding, destroy valuable resources and even produce explosions.
Answer: 12.011g/mol
Explanation: The molar mass of any element is usually stated at the bottom of periodic table (depending of your table anyways). Remember that the periodic table speaks to you in moles so every molar mass under the element is for 1 mole. By this I mean for example, 1 mole of Carbon = 12.011g of Carbon.
Answer:
Ernest Rutherford discovered the existence of a center of the atom.
Explanation:
The second row of the periodic table reflects second energy level which corresponds to 2 subshells obtained in this row.
Periodic table is arranged in rows and columns, the columns represents the group of the elements and the rows represents the energy level of the elements.
When we observe the second row of the periodic table, we will notice the following;
- The <em>second row</em> of the periodic table corresponds to <em>second energy level.</em>
- The maximum number of shells is <em>2.</em>
- The number of electrons in the second subshell increases from left to right
- The maximum number of electrons in the second subshell is 8, which is found in group zero (noble gases group).
Thus, we can conclude that the second row of the periodic table reflects second energy level which corresponds to 2 subshells obtained in this row.
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