Answer:
P = 133.4 atm
Explanation:
Given data:
Mass of helium = 988 g
Volume = 45.0 L
Temperature = 23°C (23+273= 296 K)
Pressure of cylinder = ?
Solution:
Number of moles of helium:
Number of moles = mass/ molar mass
Number of moles = 988 g/ 4 g/mol
Number of moles = 247 mol
Pressure:
PV = nRT
P = nRT/V
P = 247 mol × 0.0821. atm. L/mol. K × 296 K / 45 L
P = 6002.5 / 45 L
P = 133.4 atm
Corona
Chromosphere
Photosphere
Subsurface Flows
Convention Zone
Radiative Zone
Inner Core
Answer:
2.63×10²² atoms
Explanation:
From the question given above, the following data were obtained:
Mass of calcium (Ca) = 1.75 g
Number of atoms of calcium (Ca) =?
From Avogadro's hypothesis,
1 mole of Ca = 6.02×10²³ atoms
Recall:
1 mole of Ca = 40 g
Thus,
40 g of Ca = 6.02×10²³ atoms
Finally, we shall determine the number atoms in 1.75 g of calcium. This can be obtained as follow:
From Avogadro's hypothesis,
40 g of Ca = 6.02×10²³ atoms
Therefore,
1.75 g of Ca = 1.75 × 6.02×10²³ / 40
1.75 g of Ca = 2.63×10²² atoms
Thus, 1.75 g of Ca contains 2.63×10²² atoms.
The generic reaction a + b = c, represents a synthesis or combination reaction, which is a kind of chemical reaction.
<h3>What is a synthesis reaction?</h3>
A synthesis, or combination reaction, is a kind of reaction in which two substances combine to form a bigger molecule.
The generic reaction is:
a + b = c
Some common synthesis reactions are:
- Two elements combine to form a compound.
Fe + S = FeS
- One element and one compound combine to form a compound.
O₂ + 2 SO₂ = 2 SO₃
- Two compounds combine to form another compound.
CaO + CO₂ = CaCO₃
In all the examples above, we can verify that the substances (elements or compounds) combine with each other to form another substance (product).
The generic reaction a + b = c, represents a synthesis or combination reaction, which is a kind of chemical reaction.
Learn more about synthesis reactions here: brainly.com/question/16560802
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The pancreas, liver, and gallbladder. Hope that helps!
