D because velocity has direction in the formula (I think)
Answer:
High pressures and hot temperatures force molten rock to the surface.
Explanation:
In Mount St. Helens' case, an oceanic plate called Juan de Fuca slips under the North American plate, creating the Cascadia subduction zone. A continental arc brews adjacent to the subduction zone, where high pressures and hot temperatures force molten rock to the surface. The result is a chain of volcanoes.
To have a theory to support
We have 8.22 1 C atoms
We have 4.11 1 ethanol molecules
<u>Explanation</u>:
Step 1: Data given
Molecular formula of ethanol =
Mass of C = 164 grams
Molar mass C = 12.01 g/mol
Step 2: Calculate moles C
Moles C = mass C / molar mass C
Moles C = 164 grams / 12.01 g/mol
Moles C = 13.66 moles
Step 3: Calculate molecules of C
Atoms C = moles C number of Avogadro
Atoms C = 13.66 moles 6.02 1 molecules/ mol
Atoms C = 8.22 1 C atoms
Step 4: Calculate molecules in the sample
For 1 mol we have 2 moles C
For 13.66 moles C we have 13.66/ 2 = 6.83 moles
Molecules = 6.83 moles 6.02 1 = 4.11 1 molecules.
Answer:
u = 9,95x10⁻²⁷ kg
Explanation:
The reduced mass is defined as the effective inertial mass appearing in the two-body problem of Newtonian mechanics.
The formula is:
As the mass of the carbons is 1,99x10⁻²⁶ kg:
<em>u = 9,95x10⁻²⁷ kg</em>
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I hope it helps!