Sunday, March 30, 2008
Fri-Day 2
Bio- we did several problems showing expected blood types as a result of crosses between various pairs of blood genotypes.
We then discussed sex-linked traits, which are any traits determined by genes that are located on the X-chromosome of the sex chromosomes. Females have two X chromosomes whereas males have one X and one Y chromosome. Sex-linked phenotype ratios MAY differ from other chromosome phenotypes due to the fact that the Y chromosome does not carry many genes because it is smaller/consists of less DNA.
We saw that the genetic sex of offspring is determined by the male parent; half of all male gametes contain an X chromosome and the other half of all male gametes contain a Y chromosome. When X chromosome sperm cells fertilize an egg, a female is produced but when a Y chromosome sperm cell fertilizes an egg, a male is produced.
We then saw that the evidence for a sex-linked trait is that the trait is passed on to and EXPRESSED/SEEN exclusively in males.
Chem 7/8- we finished several examples of Le Chatelier stresses and their resulting equilibrium shifts. We saw that catalysts never cause an equilibrium shift though they can cause systems that are not at equilibrium to REACH equilibrium faster BY speeding up the forward and reverse reactions.
We then learned how to write:
1. an equilibrium constant, Keq
2. an equilibrium constant EXPRESSION ( any aq. or gas PRODUCTS to their coefficients divided by any aq. or gas REACTANTS to their coefficients). NEVER EVER use ANY solid or liquid substances in the expression! Always use the coefficients from the BALANCED equation.
We then used EQUILIBRIUM concentration data to plug into the Keq expression to get the VALUE of the Keq for a reaction/process at a given temperature.
We interpreted a large (greater than 10) Keq to mean that, AT EQUILIBRIUM, there are MOSTLY products. We interpreted a small (less than 0.1) Keq to that, AT EQUILIBRIUM, there are MOSTLY reactants.
We then did some hw packet problems.
Chem 9- we finished several examples of Le Chatelier stresses and their resulting equilibrium shifts. We saw that catalysts never cause an equilibrium shift though they can cause systems that are not at equilibrium to REACH equilibrium faster BY speeding up the forward and reverse reactions.
We then learned how to write:
1. an equilibrium constant, Keq
2. an equilibrium constant EXPRESSION ( any aq. or gas PRODUCTS to their coefficients divided by any aq. or gas REACTANTS to their coefficients). NEVER EVER use ANY solid or liquid substances in the expression! Always use the coefficients from the BALANCED equation.
We then used EQUILIBRIUM concentration data to plug into the Keq expression to get the VALUE of the Keq for a reaction/process at a given temperature.
We interpreted a large (greater than 10) Keq to mean that, AT EQUILIBRIUM, there are MOSTLY products. We interpreted a small (less than 0.1) Keq to that, AT EQUILIBRIUM, there are MOSTLY reactants.
We then discussed sex-linked traits, which are any traits determined by genes that are located on the X-chromosome of the sex chromosomes. Females have two X chromosomes whereas males have one X and one Y chromosome. Sex-linked phenotype ratios MAY differ from other chromosome phenotypes due to the fact that the Y chromosome does not carry many genes because it is smaller/consists of less DNA.
We saw that the genetic sex of offspring is determined by the male parent; half of all male gametes contain an X chromosome and the other half of all male gametes contain a Y chromosome. When X chromosome sperm cells fertilize an egg, a female is produced but when a Y chromosome sperm cell fertilizes an egg, a male is produced.
We then saw that the evidence for a sex-linked trait is that the trait is passed on to and EXPRESSED/SEEN exclusively in males.
Chem 7/8- we finished several examples of Le Chatelier stresses and their resulting equilibrium shifts. We saw that catalysts never cause an equilibrium shift though they can cause systems that are not at equilibrium to REACH equilibrium faster BY speeding up the forward and reverse reactions.
We then learned how to write:
1. an equilibrium constant, Keq
2. an equilibrium constant EXPRESSION ( any aq. or gas PRODUCTS to their coefficients divided by any aq. or gas REACTANTS to their coefficients). NEVER EVER use ANY solid or liquid substances in the expression! Always use the coefficients from the BALANCED equation.
We then used EQUILIBRIUM concentration data to plug into the Keq expression to get the VALUE of the Keq for a reaction/process at a given temperature.
We interpreted a large (greater than 10) Keq to mean that, AT EQUILIBRIUM, there are MOSTLY products. We interpreted a small (less than 0.1) Keq to that, AT EQUILIBRIUM, there are MOSTLY reactants.
We then did some hw packet problems.
Chem 9- we finished several examples of Le Chatelier stresses and their resulting equilibrium shifts. We saw that catalysts never cause an equilibrium shift though they can cause systems that are not at equilibrium to REACH equilibrium faster BY speeding up the forward and reverse reactions.
We then learned how to write:
1. an equilibrium constant, Keq
2. an equilibrium constant EXPRESSION ( any aq. or gas PRODUCTS to their coefficients divided by any aq. or gas REACTANTS to their coefficients). NEVER EVER use ANY solid or liquid substances in the expression! Always use the coefficients from the BALANCED equation.
We then used EQUILIBRIUM concentration data to plug into the Keq expression to get the VALUE of the Keq for a reaction/process at a given temperature.
We interpreted a large (greater than 10) Keq to mean that, AT EQUILIBRIUM, there are MOSTLY products. We interpreted a small (less than 0.1) Keq to that, AT EQUILIBRIUM, there are MOSTLY reactants.
# posted by C @ 12:08 PM 
