CuO(aq) + H2(g) → H2O(l) + Cu(s)
CuO= 64 + 16= 80g
1 mole of CuO → 1 mole of Cu
80g of CuO → 1 mole of Cu
20.50g of CuO → y
y= 20.50/80= 0.26mole.
Answer:
The correct answers are "They travel slower than P waves", "They result in much ground motion" and " They are produced by P and S waves".
Explanation:
A surface wave can travel through the existing interface between Earth and air, as well as between Earth and water. A clear example of this type of waves are Love and Rayleigh waves. They travel slower than primary waves, produce large movements in the ground and are produced by primary and secondary waves.
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The properties which compounds exhibit depending on the type of inter molecular forces that is holding their molecules together. Although water and ammonium ion have the same molecular size and the same electronic geometry, their other physical and chemical properties are different because of the differences in the inter molecular forces that hold their molecules together. Hydrogen bonding exist in the water molecules while dipole dipole force exist in the ammonium ion molecules. The boiling point of water is higher than that of ammonium ion because an higher amount of heat energy is required to break the strong hydrogen bonds which holds the molecules of the water together.
<span>CO2. NaCl. HCl. These may all be classified as____. A) elements and compounds B) elements and molecules C) elements and pure substances<em><u> D) compounds and pure substances</u></em>
</span>I believe the correct answer is <em><u>D. Compounds and pure substances</u></em><em><u>.</u></em>
