Answer:
Pressure of neon = 1.17 atm
Pressure of hydrogen = 0.63 atm
Explanation:
Given data:
Number of moles of H₂ = 2.5 mol
Number of moles of Ne = 4.6 mol
Total pressure = 1400 mmHg (1400/760 = 1.8 atm)
Solution:
We will solve this problem through mole fraction method.
Total number of moles = 2.5 + 4.6 = 7.1
Mole fraction of H₂ Mole fraction of Ne
2.5 mol/7.1 mol= 0.35 4.6mol/7.1mol = 0.65
Pressure of hydrogen = 0.35 × 1.8 atm
Pressure of hydrogen = 0.63 atm
Pressure of neon = 0.65 × 1.8 atm
Pressure of neon = 1.17 atm
Total pressure which is already given is sum of partial pressure of hydrogen and neon gas.
0.63 atm + 1.17 atm = 1.8 atm
Answer:
1. The Dean's theory is an untested idea that he will investigate; scientific theories have already been investigated.
Explanation:
Scientific theory by definition is something that can be tested. However, in science, a scientific theory generally is something that has already been tested (hence the scientific definition). Remember from math, Theorem is something that can be tested, Postulate is something you can't. By prescribing theorem on it, it means that you can test whether it is true or not.
As for the Dean, he has a "theory" of why phones are being stolen from student backpacks. However, it seems that he did not test for it (i.e., install security cameras, etc.). This means that, without testing, he cannot say it is a scientific theory.
<u>Answer</u>:
"weathering breaks rocks into minerals and plants die and decay" must occur to form soil
<u>Explanation</u>:
For the formation of the soil two process are mandatory and they are erosion as well as weathering. The weathering takes place near the surface of the soil, which can occur due to various physical and chemical processes. Being an important part of soil development. It may occur rapidly or can be a slow process for decades. Water and air helps in weathering. The transport is generally by wind or with the help of flow of water, ice, etc
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