Equatorial - Study guides, Class notes & Summaries

Purines and examples of them Purines contain two carbon-nitrogen rings and four nitrogen atoms. Adenine and guanine Pyrimidines and examples of them pyrimidines contain one carbon-nitrogen ring and two nitrogen atoms. Thymine and cytosine Structure of DNA DNA is a double helix (two helical strands.) The two strands are held together by the 'rungs', which are made of complementary pairs. The pairs are held together by weak hydrogen bonds. Arrangement of DNA antiparallel arrangement, ...

Chapter 1 Carbon and Its Compounds CHECKPOINT PROBLEMS Practice Problem 1.1 a) S — 1s2 2s2 2p6 3s2 3p4 b) Cl — 1s2 2s2 2p6 3s2 3p5 c) Na+ — 1s2 2s2 2p6 1-2 Copyright © 2018 Nelson Education Limited Practice Problem 1.2 a) Count valence electrons. Build a basic bonding framework and account for electrons used. Add remaining electrons and check for formal charges. The molecule has a lone pair on the nitrogen. All other electrons are bonding electrons. b) Count valence electrons. Build a bas...

What is the general formula for a carbohydrate? - Cx(H2O)y How do you determine the number of stereoisomers for a given carbohydrate? - 2^n where n= number of stereocenters Distinguish between the D and L designations for carbohydrates. - In the L form the hydroxy group is on the bottom left closest to the CH2OH group in the frame of a Fischer projection In the D form the OH is on the bottom right What are anomers? - Diastereomers formed by the cyclization of carbohydrates (*note they ...

Which way does wind shift in a low pressure system? correct answers Clockwise (veering) Which way does wind shift in a high pressure system? correct answers Anticlockwise (backing) What weather is associated with a trough? correct answers Rain, cloud and storms What whether is associated with a ridge? (winds, cloud) correct answers Light winds, no cloud In the mesosphere, temperature: correct answers Decreases with height In the stratopause, temperature: correct answers Is constan...

Coriolis Effect Ans: Causes a deflection in the direction of objects moving on Earth. Caused by the rotation of the Earth under moving objects. N. Hemisphere: Deflects to the right S. Hemisphere: Deflects to the left As latitude increases, so does the... Ans: Coriolis effect This pressure system is counter clockwise in the N. Hemisphere and clockwise in the S.Hemisphere Ans: Low Pressure This pressure system is clockwise in the N.Hemisphere and counter clockwise in the S. Hemisphere...

the direction from which the wind is blowing Wind direction the region of the earth that receives most of the sun's heat The Equator the first layer of the atmosphere in which the vast majority of weather, storms, and temperature differences occur. It extends from sea level up to 20,000 feet over the poles and to 60,000 feet over the equatorial regions and most of the atmosphere is contained in this region The Troposphere the first known powered aircraft with humans on board Hot air ballo...

The two main gases of the Earth's atmosphere are: (select two) correct answers oxygen and nitrogen This is the layer of the atmosphere where weather occurs? correct answers troposphere Nearly all the atmospheric mass can be found within __ of earth's surface. correct answers 30 miles The atmosphere is about __ of the earth's radius. correct answers 0.8% Which two gases are variable in our atmosphere? correct answers water vapor and methane The Northern Lights occur in the Mesos...

Chapter 1 Carbon and Its Compounds CHECKPOINT PROBLEMS Practice Problem 1.1 a) S — 1s2 2s2 2p6 3s2 3p4 b) Cl — 1s2 2s2 2p6 3s2 3p5 c) Na+ — 1s2 2s2 2p6 1-2 Copyright © 2018 Nelson Education Limited Practice Problem 1.2 a) Count valence electrons. Build a basic bonding framework and account for electrons used. Add remaining electrons and check for formal charges. The molecule has a lone pair on the nitrogen. All other electrons are bonding electrons. b) Count valence electrons. Build a bas...

Chapter 1 Carbon and Its Compounds CHECKPOINT PROBLEMS Practice Problem 1.1 a) S — 1s2 2s2 2p6 3s2 3p4 b) Cl — 1s2 2s2 2p6 3s2 3p5 c) Na+ — 1s2 2s2 2p6 1-2 Copyright © 2018 Nelson Education Limited Practice Problem 1.2 a) Count valence electrons. Build a basic bonding framework and account for electrons used. Add remaining electrons and check for formal charges. The molecule has a lone pair on the nitrogen. All other electrons are bonding electrons. b) Count valence electrons. Build a bas...

origin of earth - Answer-• Supernova: death of a star (great explosion) • Supernova happened 4.6 bya, dust and gas flattens to a disk and spins faster due to gravity and solar nebula formed. • Solar Nebula: describes formation of Earth 4.5 bya • Nebula: gas cloud origin of oceans - Answer-• volcanic explosion, H2O condensed and rained down for thousands of years to create oceans • icy comets hitting earth (responsible for 1/2 of earths ocean water) origin of life - Answer-•...