2.
For the titration of 20 mL of 0.1026 M NH3 with 0.09747 M HCl, calculate the pH before the addition of titrant, at 10 mL prior to the equivalence point, at the equivalence point, and at 10 mL after the equivalence point. Ka (NH4+) = 5.7 x 10-10
In: Chemistry
In: Physics
in a uranyl contaminated aquifer, there is sulfate,
nitrate, and ferrihydrite. use thermodynamics calculations to
predict the sequence of electron accepting processes in that
aquifer.
After what terminal electron acceptor(s) and before
what terminal electron acceptors would uranyl be reduced? In order
to stimulate uranyl reduction
In: Other
Describe the series of events that occurs when a ligand binds to a receptor tyrosine kinase during cellular signalling, and what occurs once the ligand is removed?
Describe the series of events that occurs before and after a ligand binds to a G protein coupled receptor during cellular signalling?
In: Biology
If n = 13, ¯xx¯ = 48, and s = 20, construct a confidence interval at a 99% confidence level. Assume the data came from a normally distributed population. Give your answers to three decimal places.
answer ____ < μμ < ____ answer
Looking for two answer before and after.
In: Statistics and Probability
For the following exercises, use this scenario: The equation N(t) = 1200/1 + 199e−0.625t models the number of people in a school who have heard a rumor after t days.
To the nearest tenth, how many days will it be before the rumor spreads to half the carrying capacity?
In: Math
For each problem, follow these steps.
State the hypotheses and identify the claim.
Find the critical values(s).
Compute the test value.
Make the decision.
Summarize the results.
The reasons that workers in the 25-54 year old category were displaced are listed below.
Plant closed/moved 44.8%
Insufficient work 25.2%
Position eliminated 30.0%
A random sample of 180 displaced workers (in this age category) found that 40 lost their jobs due to their position being eliminated, 53 due to insufficient work, and the rest due to the company being closed or moving. At the 0.01 level of significance, are these proportions different from those from the U.S. Department of Labor?
In: Statistics and Probability
a) Consider 1.3 moles of an ideal gas at an initial temperature of 400 K and in a 1.2 m3 closed container. If the gas goes through an isochoric process to twice the initial temperature, what is the new pressure of the gas in Pa?
b) Consider 1.3 moles of an ideal gas at an initial temperature of 400 K and in a 1.2 m3closed container. If the gas goes through an isothermal process to 3.6 m3, what is the new pressure of the gas in Pa?
c) Consider 1.3 moles of an ideal gas at an initial temperature of 400 K and in a 1.2 m3 closed container. If the gas goes through an isobaric process to 3.6 m3, what is the new temperature of the gas in Kelvin?
In: Physics
31. What is an adjusted trial balance?
32. An adjusting entry normally affects what types of accounts?
33. What are closing entries? What purpose do they serve? What accounts are
closed? What accounts are NOT closed? When are they prepared?
34. What is Income Summary?
35. What accounts are included in a post-closing trial balance?
36. What is a classified Balance Sheet? What are the sub-sections of assets and
liabilities?
37. Merchandise inventory—define, characteristics
38. Gross profit, operating expenses, operating income
39. Credit terms
40. What do the debit entries and credit entries to merchandise inventory mean?
In: Accounting
Let X be an uncountable set, let τf be the finite complement
topology on X, and let τc be the countable complement
topology; namely, we have
τf ={U⊂X : X\U is finite}∪{∅},
τc={U⊂X : X\U is countable}∪{∅},
where “countable” means that the set is either finite or countably infinite (in bijection with the natural numbers).
(a) What are the compact subspaces of (X, τf )? Are all compact subspaces closed in (X, τf )?
(b) What are the compact subspaces of (X,τc)? Are all compact subspaces closed in (X,τc)?
(c) What have we learned about the nature of compact subspaces when (X,τ) is not Hausdorff ?
In: Advanced Math