Unless they chemically react with each other, the individual gases in a mixture of gases do not affect each other’s pressure. Each individual gas in a mixture exerts the same pressure that it would exert if it were present alone in the container (
[link] ). The pressure exerted by each individual gas in a mixture is called its
partial pressure . This observation is summarized by
Dalton’s law of partial pressures :
The total pressure of a mixture of ideal gases is equal to the sum of the partial pressures of the component gases :
In the equation
P
Total is the total pressure of a mixture of gases,
P
A is the partial pressure of gas A;
P
B is the partial pressure of gas B;
P
C is the partial pressure of gas C; and so on.
The partial pressure of gas A is related to the total pressure of the gas mixture via its
mole fraction (
X ) , a unit of concentration defined as the number of moles of a component of a solution divided by the total number of moles of all components:
where
P
A ,
X
A , and
n
A are the partial pressure, mole fraction, and number of moles of gas A, respectively, and
n
Total is the number of moles of all components in the mixture.
The pressure of a mixture of gases
A 10.0-L vessel contains 2.50
10
−3 mol of H
2 , 1.00
10
−3 mol of He, and 3.00
10
−4 mol of Ne at 35 °C.
(a) What are the partial pressures of each of the gases?
(b) What is the total pressure in atmospheres?
Solution
The gases behave independently, so the partial pressure of each gas can be determined from the ideal gas equation, using
:
The total pressure is given by the sum of the partial pressures:
Check your learning
A 5.73-L flask at 25 °C contains 0.0388 mol of N
2 , 0.147 mol of CO, and 0.0803 mol of H
2 . What is the total pressure in the flask in atmospheres?
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
hello. autism is a umbrella term. autistic kids have different disorder overlapping. for example. a kid may show symptoms of ADHD and also learning disabilities.
before treatment please make sure the kid doesn't have physical disabilities like hearing..vision..speech problem. sometimes these
Jharna
continue..
sometimes due to these physical problems..the diagnosis may be misdiagnosed.
treatment for autism.
well it depends on the severity.
since autistic kids have problems in communicating and adopting to the environment.. it's best to expose the child in situations where the child
Jharna
child interact with other kids under doc supervision.
play therapy.
speech therapy.
Engaging in different activities that activate most parts of the brain.. like drawing..painting. matching color board game.
string and beads game.
the more you interact with the child the more effective
Jharna
results you'll get..
please consult a therapist to know what suits best on your child.
and last as a parent. I know sometimes it's overwhelming to guide a special kid.
but trust the process and be strong and patient as a parent.
Jharna
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