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Susan solomon

Atmospheric and climate scientist Susan Solomon ( [link] ) is the author of one of The New York Times books of the year ( The Coldest March , 2001), one of Time magazine’s 100 most influential people in the world (2008), and a working group leader of the Intergovernmental Panel on Climate Change (IPCC), which was the recipient of the 2007 Nobel Peace Prize. She helped determine and explain the cause of the formation of the ozone hole over Antarctica, and has authored many important papers on climate change. She has been awarded the top scientific honors in the US and France (the National Medal of Science and the Grande Medaille, respectively), and is a member of the National Academy of Sciences, the Royal Society, the French Academy of Sciences, and the European Academy of Sciences. Formerly a professor at the University of Colorado, she is now at MIT, and continues to work at NOAA.

For more information, watch this video about Susan Solomon.

A photograph is shown of Susan Solomon sitting next to a globe.
Susan Solomon’s research focuses on climate change and has been instrumental in determining the cause of the ozone hole over Antarctica. (credit: National Oceanic and Atmospheric Administration)

Key concepts and summary

The ideal gas law can be used to derive a number of convenient equations relating directly measured quantities to properties of interest for gaseous substances and mixtures. Appropriate rearrangement of the ideal gas equation may be made to permit the calculation of gas densities and molar masses. Dalton’s law of partial pressures may be used to relate measured gas pressures for gaseous mixtures to their compositions. Avogadro’s law may be used in stoichiometric computations for chemical reactions involving gaseous reactants or products.

Key equations

  • P Total = P A + P B + P C + … = Ʃ i P i
  • P A = X A P Total
  • X A = n A n T o t a l

Chemistry end of chapter exercises

What is the density of laughing gas, dinitrogen monoxide, N 2 O, at a temperature of 325 K and a pressure of 113.0 kPa?

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Calculate the density of Freon 12, CF 2 Cl 2 , at 30.0 °C and 0.954 atm.

4.64 g L −1

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Which is denser at the same temperature and pressure, dry air or air saturated with water vapor? Explain.

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A cylinder of O 2 ( g ) used in breathing by emphysema patients has a volume of 3.00 L at a pressure of 10.0 atm. If the temperature of the cylinder is 28.0 °C, what mass of oxygen is in the cylinder?

38.8 g

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What is the molar mass of a gas if 0.0494 g of the gas occupies a volume of 0.100 L at a temperature 26 °C and a pressure of 307 torr?

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What is the molar mass of a gas if 0.281 g of the gas occupies a volume of 125 mL at a temperature 126 °C and a pressure of 777 torr?

72.0 g mol −1

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How could you show experimentally that the molecular formula of propene is C 3 H 6 , not CH 2 ?

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The density of a certain gaseous fluoride of phosphorus is 3.93 g/L at STP. Calculate the molar mass of this fluoride and determine its molecular formula.

88.1 g mol −1 ; PF 3

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Consider this question: What is the molecular formula of a compound that contains 39% C, 45% N, and 16% H if 0.157 g of the compound occupies l25 mL with a pressure of 99.5 kPa at 22 °C?

(a) Outline the steps necessary to answer the question.

(b) Answer the question.

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Questions & Answers

who is the father of chemistry
Naomi Reply
what is hybridization and bonding
Simon Reply
please who is the father of chemistry
Naomi
Antoine Lavoisier
Abdelkarim
I recommend reading on Google.
Abdelkarim
Also, god has created everything
Abdelkarim
(Allah, the creator)
Abdelkarim
how to determine the empirical formula
Vickie Reply
what is neutralisation reaction
Ugbaje Reply
It is a reaction where an acid (aq) reacts with an alkali (aq) to form salt AND water.
Abdelkarim
What is the ratio of the average kinetic energy of a SO 2 molecule to that of an O 2 molecule in a mixture of two gases? What is the ratio of the root mean square speeds, u rms , of the two gases?
xMah_Bx Reply
what is methyl orange
Wisdom Reply
its an indicator
Abigail
It is an organic molecule that reacts with acid/base medium and shows change in colour (due to formed products). It can be used to test for alcohols which are prohibited to drink in Islam as it is bad for brain and liver and immunity.
Abdelkarim
it is an indicator used to determine the end point in an acid-base titration
xMah_Bx
explain more about this topic
Ayomide Reply
Which topic please?
Abdelkarim
covalent bond explanation
EPHETA Reply
God has lictured these rules that the electrons move with them and the space time curve. So we prwy to God in Islam or we suffer. Please learn about Islam and science and mention God and thank him.
Abdelkarim
yes, it is very true. God is the one who inspires science. Then we, as his children, have the privilege to learn about what he has created. I'm still a novis at chemistry. I still have a lot to learn.
Eric
Beautiful, however, what I learned from the Quran is that god has created human and has a mission like managing the ecology, building, learning, mentioning god (saying glory to Almighty for instance few times and periodic). And the moat important prayer lile prophet Muhammed the last meassenger.
Abdelkarim
Also God forgives all sins except assossiating any one with him like sons and daughters or stone sculpture. Beautifully, if some one stops from saying this God can switch their sins to virtueness. And God all merciful doesnt get bored forgiving people who ask for forgiveness.
Abdelkarim
Also, there is a versw in the Quran that sates: { corruption has appeared in the land and the sea he will taste them from what their hands have gained} this reminds me of covid from stupid politicians who will be throne to hell.
Abdelkarim
nature of bond in N2 molecule is
Ahmad Reply
Triple covalent bond, and that is why it is hardly reactive because in order to react you must break three strong covalent bonds.
Abdelkarim
what is electromagnetic energy
Onyekwu Reply
in a school of 120 students, 41studied mathematics, 48studied chemistry and 42 studied physics, 16 studied both chemistry and mathematics, 14 studied mathematics and physics, 18 studied chemistry and physics and 9 studied all the three subjects. how many of them studied exactly one subject?
Kafayat Reply
Does Chromium oxidize?
Jag Reply
yes
Alaa
@Alaa It doesn't.
Jag
yes. it's a very strong oxidizing agent
xMah_Bx
what is compound
Queen Reply
what are the types of hydrocarbon
Dolapo Reply
homologous series is under what
Dolapo
Don't get your Question.
Jag
OK Aliphatic and Aromatic.
Jag
What is an acid
Progress Reply
What is hydro carbon
Progress
A hydro carbon is an organic compund formed of carbon and hydrogen only that comes from plant derivatives. It is mercy from God as it has lots of benifits. In Islam, we know from the Quran that God has created for every illness a cure. We sometimes find such compunds in plants and we use it in pills
Abdelkarim
what are the types of hydrocarbon
Dolapo
we have two types of hydrocarbons Aliphatic and Aromatic
Dr
under Aliphatic we have Alkane, Alkene,Alkyl Aromatic we have Benzene
Dr
Practice Key Terms 4

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Source:  OpenStax, Chemistry. OpenStax CNX. May 20, 2015 Download for free at http://legacy.cnx.org/content/col11760/1.9
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