Thursday
September 18, 2014

Posts by howard


Total # Posts: 36

Chem
----- Charge Me Up, Scotty! (10/10 points) Determine the potential (V) by which a proton must be accelerated so as to assume a particle wavelength of 0.0293 nm. 0.9544 - correct ----- PES S+P 500 (10/10 points) Shown below are the photo electron spectra for phosphorous and ...
August 25, 2014

maths
what is the total of £3.89 x 589
April 3, 2014

history
What incident abroad marked the election day of the 1956 election, thereby enhancing Eisenhower's bid for a second term?
September 26, 2013

Math
What is 90,000,000,000 x 1.306???
August 12, 2013

physics
Three forces act on a moving object. One force has a magnitude of 83.4 N and is directed due north. Another has a magnitude of 47.2 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with ...
July 12, 2013

Algebra 2
Don't cheat. I know what you are doing and will report you to the school if I see it again.
May 3, 2013

Chemistry
Solutions of sodium thiosulfate are used to dissolve unexposed AgBr (Ksp = 5.0 10-13) in the developing process for black-and-white film. What mass of AgBr can dissolve in 1.40 L of 0.425 M Na2S2O3? Ag+ reacts with S2O32- to form a complex ion. Ag+(aq) + 2 S2O32-(aq)--> Ag(...
March 18, 2013

Chemistry
Solutions of sodium thiosulfate are used to dissolve unexposed AgBr (Ksp = 5.0 10-13) in the developing process for black-and-white film. What mass of AgBr can dissolve in 1.40 L of 0.425 M Na2S2O3? Ag+ reacts with S2O32- to form a complex ion. Ag+(aq) + 2 S2O32-(aq)--> Ag(...
March 17, 2013

Spanish 2
They all look correct to me! (I've been enrolled in a Spanish course for six consecutive years now and have never made less than an A)
March 17, 2013

SPANISH 2 HELP
Check over number 3. Camisa is a singular feminine noun, which means that you will need la to replace it as a direct object pronoun.
March 17, 2013

Chemistry
Solutions of sodium thiosulfate are used to dissolve unexposed AgBr (Ksp = 5.0 10-13) in the developing process for black-and-white film. What mass of AgBr can dissolve in 1.40 L of 0.425 M Na2S2O3? Ag+ reacts with S2O32- to form a complex ion. Ag+(aq) + 2 S2O32-(aq)--> Ag(...
March 17, 2013

Chemistry
Write equations for the stepwise formation of each of the following complex ions. (Type your answer using the format CO2 for CO2, [NH4]+ for NH4+, and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a) Ni(CN)42- (b) Mn(C2O4)22-
March 17, 2013

Chemistry
Solutions of sodium thiosulfate are used to dissolve unexposed AgBr (Ksp = 5.0 10-13) in the developing process for black-and-white film. What mass of AgBr can dissolve in 1.40 L of 0.425 M Na2S2O3? Ag+ reacts with S2O32- to form a complex ion. Ag+(aq) + 2 S2O32-(aq)--> Ag(...
March 17, 2013

Chemistry
Write equations for the stepwise formation of each of the following complex ions. (Type your answer using the format CO2 for CO2, [NH4]+ for NH4+, and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a) Ni(CN)42- (b) Mn(C2O4)22-
March 17, 2013

Chemistry
Solutions of sodium thiosulfate are used to dissolve unexposed AgBr (Ksp = 5.0 10-13) in the developing process for black-and-white film. What mass of AgBr can dissolve in 1.40 L of 0.425 M Na2S2O3? Ag+ reacts with S2O32- to form a complex ion. Ag+(aq) + 2 S2O32-(aq)--> Ag(...
March 17, 2013

chemistry
thanks!
January 12, 2013

chemistry
the wavelength is for electron, whereas the frequency of photon is needed
January 12, 2013

chemistry
no
January 12, 2013

chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 3.188×10−10 m. Determine the frequency (in hz) of the interacting photon.
January 12, 2013

Math
can you help i dnt know what to do so could you tell me how to solve it 1. every weekend, Phil drives from his home to his favorite amusement park, a distance of 60 miles. a. If he averages 40 mph for the first half of the trip, what must his average speed for the second half ...
December 30, 2012

Economics
Given the following information calculate the Marginal Revenues. I am getting lost on the order because I know the formula is change in TR/change in Q. Q Price TR 60 26,000 (60x26K) = 1,560,000 70 22,000 (1,540,000) 80 18,000 (1,440,000) 90 14,000 (1,260,000) 100 10,000 (1,000...
December 13, 2012

Chem
Calculate the heat capacity of a calorimeter if th ecombustion of 4.665 g of benzoic acid led to an increase in temperature of 7.148 C
October 11, 2012

Marketing
How many unit sales and dollar sales did the Famous Amos cookies Co record for 2011. Also How many unit sales and dollar sales did Chewy Chips Ahoy! record for 2011.
July 11, 2012

Math, HELP!
if you wish to have $250,000 in 30 years, how much mush be deposited weekly in an account that pays 6% compounded weekly? (50 weeks per year)
May 7, 2012

Fancial management
Submit your work via My Assignments. 1. Bob’s Country Bunker (BCB), a chain of economically priced motels in the Midwestern United States has reviewed its current target structure of 40% debt and 60% equity. It can issue debt at a rate of 9%. The last dividend paid on its...
February 13, 2012

Finance
Benson Incorporated has bonds with the following features par value of 1000.00 maturity is 10%. Determine if the bond sells for a premium, par, or discount and explain your answer. Calculate the value of the bond if interest is paid on an annual basis versus a semi annual ...
February 6, 2012

algebra
Breakeven Point = $55 ($15 - $4)
February 6, 2012

science
Am I correct to label hot chocolate and ocean water as solvents
January 13, 2012

math
sander needs to find 73%of $239. what is a good estimate of the answer
August 18, 2011

Chemistry
Which of the following is the BEST explanation for why a catalyst speeds up a reaction? A) The catalyst increases the concentration of the products B) The catalyst decreases the total pressure in the container. C) The catalyst raises the temperature of the reaction mixture. D...
January 24, 2011

Chemistry
Which of the following is the BEST explanation for why a catalyst speeds up a reaction? A) The catalyst increases the concentration of the products B) The catalyst decreases the total pressure in the container. C) The catalyst raises the temperature of the reaction mixture. D...
January 24, 2011

Chemistry
Which of the following is the BEST explanation for why a catalyst speeds up a reaction? A) The catalyst increases the concentration of the products B) The catalyst decreases the total pressure in the container. C) The catalyst raises the temperature of the reaction mixture. D...
January 23, 2011

programming
I have been stuck on this problem in my software design class and I hate going in these places and looking stupid but my professor had a family emergency and my homework is due tomorrow night. Design a program in pseudocode that calculates the amount of money a person would ...
October 30, 2009

math
determine the number of combinations of 7 out of 10 items. and then determine the number of combinations of 4 out of 7 items.
October 18, 2008

Accounting- Help Please
It looks like you have the same homework as I do. Firt, ask your instructor for the Excel Templlates (Master Templates) for accounting. These should consist of a general journal, trial balance, worksheet, T-accounts, general ledger and more. In one of your chapters there is an...
April 16, 2008

Math
list all the arrays for each number. An example number is 8 Im not sure what they mean by array for each number. Can you give me an example or explain? Thanks!
February 15, 2007

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