What do igneous rocks become when they break down and settle into layers?

Sedimentary rocks

Explanation:

Igneous rocks will become sedimentary rocks when they break down and settle into layers .

Igneous rocks are rocks that are formed by the cooling and solidification of magma within or on the earth crust.

When agents of weathering and denudation forces acts on a rock body, they break them down producing sediments in the process.

Sediments are transported into depositional basins where they are laid down and cemented together. This in turn forms sedimentary rocks. The break down and settling of sediments leads to the formation of sedimentary rocks.

Percentage yield = 57.57%

Explanation:

Given data:

Actual yield of carbondioxide = 38.0 g

Mass of propane = 22.05 g

Percentage yield = ?

Solution:

Chemical equation:

C₃H₈ + 5O₂   →   3CO₂ + 4H₂O

Number of moles of propane:

Number of moles of propane = mass / molar mass

Number of moles of propane = 22.05 g/ 44 g/mol

Number of moles of propane = 0.5 mol

Now we compare the moles of carbon dioxide with moles of propane.

                           C₃H₈                 :               CO₂

                              1                     :                 3

                             0.5                  :               3×0.5 = 1.5 mol

Mass of carbondioxide:

Mass of carbondioxide = moles × molar mass

Mass of carbondioxide = 1.5 mol × 44 g/mol

Mass of carbondioxide = 66 g

Percentage yield:

Percentage yield = actual yield / theoretical yield × 100

Percentage yield =  38 g/ 66 g × 100

Percentage yield = 57.57%