Tutor profile: Zack E.
How many ml of 0.5M NaOH are needed to neutralize 200 ml of 2M H2SO4?
MaVa = MbVb Note: each mole of H2SO4 gives us two moles of H+, so double the concentration since its diprotic. (4M) (200ml) = (0.5)(X) Solve for X: X= 1,600 ml or 1.6 L
In operant conditioning, what is it called when a stimulus is added to increase the likelihood of a behavior occurring again?
Positive reinforcement. Reinforcement occurs when an action or stimulus increases the likelihood of the behavior occurring again (vs. punishment which discourages the behavior from happening again). Positive refers to adding a stimulus, while negative refers to removing a stimulus.
If DNA is found to have 30% Guanosine in a eukaryotic organism, what percent of the DNA is Adenosine?
The DNA will be 20% Adenosine. Since Eukaryotic DNA is double stranded, it will follow Chargaffs rule, in which the quantity of base paired bases will have identical percentages. Thus is Guanosine is 30%, cytosine which is its base pair must also be 30% of the composition. This leaves the remaining 40% to be divided equally among Adenosine and Thymosine, 20% each.
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