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bearhunter [10]
3 years ago
6

Which geologic process most likely caused the formation of the Mount St. Helens Volcano?

Chemistry
1 answer:
LuckyWell [14K]3 years ago
3 0

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.

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A compound is 80.0% carbon and 20.0% hydrogen by mass. assume you have a 100.-g sample of this compound. the molar mass of the c
ch4aika [34]
Basis of the calculation: 100g
 
For Carbon: 
 Mass of carbon = (100 g)(0.80) = 80 g
  Number of moles of carbon = (80 g)(1 mole / 12g) = 20/3

For Hydrogen:
  Mass of hydrogen = (100 g)(0.20) = 20 g
     Number of moles of hydrogen = (20 g)(1 mole / 1 g) = 20

Translating the answer to the formula of the substance,
     C20/3H20

Dividing the answer,
    CH3

The molar mass of the empirical formula is:
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Since, the molar mass given for the molecular formula is 30.069 g/mol, the molecular equation is,
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4 years ago
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3 years ago
The function of ribosomal RNA (rRNA) is
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How many Significant Figures does 105.60 have? *
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