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Chemistry concepts and calculations

117302 questions • Page 1942 / 2347

We have a rather conventional Windows shop with MS Server 2003 and corresponding
We have a rather conventional Windows shop with MS Server 2003 and corresponding Exchange services at a single site. We have some offsite (travelling laptops, stationary workstati…
We have a requirement for 2-factor authentication for our internal WiFi SSID\'s.
We have a requirement for 2-factor authentication for our internal WiFi SSID's. Currently we use PEAP w/ MS-CHAPv2 to pass windows creds through the AP to a RADIUS server (A Domai…
We have a research project with idea->prototype->statistics development cycle. A
We have a research project with idea->prototype->statistics development cycle. Anyway, our final product is a prototype, so the statistics collection suite is not used persi…
We have a set of servers hosted at a tier-1 provider, and they are currently beh
We have a set of servers hosted at a tier-1 provider, and they are currently behind a VPN running on a gateway machine and not accessible to the open internet. Due to VPN instabil…
We have a shared webserver which is being monitored constantly by our ZABBIX age
We have a shared webserver which is being monitored constantly by our ZABBIX agent. On some hours of day we have unusual TCP traffic on port 80. Lets say we have over 400 connecti…
We have a single-page web application, and we have a new SSO site (also our own)
We have a single-page web application, and we have a new SSO site (also our own) using OAuth2, and are looking to hook them up. On our production/staging/CI deployments, it's easy…
We have a situation where we get a designated drop location on a client\'s serve
We have a situation where we get a designated drop location on a client's server for static content we develop that they in turn use in their application. Think single page applic…
We have a solution of protein that has a concentration of 0.25 mg/ml. a.We need
We have a solution of protein that has a concentration of 0.25 mg/ml. a.We need 20 g of the protein for an experiment. What volume of the protein solution do we need? b.Suppose we…
We have a solution of protein that has a concentration of 0.25 mg/ml. a.We need
We have a solution of protein that has a concentration of 0.25 mg/ml. a.We need 20micrograms of the protein for an experiment. What volume of the protein solution do we need? b.Su…
We have a very big application written in C++ using the MFC framework (millions
We have a very big application written in C++ using the MFC framework (millions of code lines). No need to say that it's a legacy system, but it's also heavily maintained and upda…
We have a very large, 10 year old LAMP (Linux, Apache, MySQL, PHP) web applicati
We have a very large, 10 year old LAMP (Linux, Apache, MySQL, PHP) web application that is out of control and poorly written due to a large number of patches and possible hundreds…
We have a water supply of neutral pH with lead Pb2+ and magnesium Mg2+ in the wa
We have a water supply of neutral pH with lead Pb2+ and magnesium Mg2+ in the water supply. The concentration of the Pb2+ is .010M and the concentration of the Mg2+ is .010M. Usin…
We have a web application which contains a web service with over 50 methods. The
We have a web application which contains a web service with over 50 methods. The application is currently installed at a number of sites and is currently being maintained by one d…
We have a webapp that is build to use SSL for certain (but not all) types of req
We have a webapp that is build to use SSL for certain (but not all) types of requests. The webapp is using multiple subdomains, the number can change. This combination of features…
We have an Authority Center (CA) generating some public and private keys for eac
We have an Authority Center (CA) generating some public and private keys for each client (more than one pair for each client). One method for sending keys to client is sharing a s…
We have an application which is C++ trying to access MySQL database. There are s
We have an application which is C++ trying to access MySQL database. There are several (about 5 or so) threads in the application (with Boost library for threading) and in each th…
We have an application which is not per user and can be used by multiple users s
We have an application which is not per user and can be used by multiple users simultaneously. Data is also shared by all users. The path to the data folders we use is ProgramData…
We have an aqueous solution of ammonia in equilibrium with water by its K_b expr
We have an aqueous solution of ammonia in equilibrium with water by its K_b expression, What is the effect of adding ammonium chloride to this solution? 1. The pH increases. 2. Th…
We have an existing Mutex C++ class. It has a debug feature to track the owner t
We have an existing Mutex C++ class. It has a debug feature to track the owner thread id. So it has a member variable to store this, but because the original developer doesn't wan…
We have been tasked with replacing a series of 25 year old mainframe application
We have been tasked with replacing a series of 25 year old mainframe applications with web applications. There are 4 applications in the series and we are trying to come up with a…
We have built a web application using ASP.Net MVC3 and SQL Server 2008 which has
We have built a web application using ASP.Net MVC3 and SQL Server 2008 which has features like credit card payment, etc. We engaged a 3rd party to perform vulnerability assessment…
We have chosen the convention that the zero of energy corresponds to isolated at
We have chosen the convention that the zero of energy corresponds to isolated atoms in the ground electronic state, at rest. However, other choices of the zero of energy are possi…
We have discussed low and high spin complexes in class. We said that a large pai
We have discussed low and high spin complexes in class. We said that a large pairing energy (P) and a small value of 10Dq favors the high spin case, while a low P and a large valu…
We have following relevant data for water: normal melting point = 0.0 degree C,
We have following relevant data for water: normal melting point = 0.0 degree C, normal boiling point = 100.0 degree C, C_s (H_2O(1)) = 4.18 J/g degree K, C_s(icc) = 2.09 J/g. degr…
We have following relevant data for water: normal melting point =0.0 degree C, n
We have following relevant data for water: normal melting point =0.0 degree C, normal boiling point = 100.0 degree C, C_3 (H_2 O(1)) = 4.18 J/g degree K, C_s(ice) = 2.09 J/g. degr…
We have inherited a data structure for storing non-negative integers in an array
We have inherited a data structure for storing non-negative integers in an array. The array has been pre-allocated and is of size M. However, we don’t always actually use all M sl…
We have learned a few secondary periodicity trends, including (n) group and (n +
We have learned a few secondary periodicity trends, including (n) group and (n + 10) group similarity, diagonal relationship, and knight’s move relationship. Use these trends for …
We have learned that valence bond theory helps us to predict and bonding in mole
We have learned that valence bond theory helps us to predict and bonding in molecules. All of the following statements about molecular bonding are true, but which statement best s…
We have learned that valence bond theory helps us to predict sigma and pi bondin
We have learned that valence bond theory helps us to predict sigma and pi bonding in molecules. All of the following statements about molecular bonding are true, but which stateme…
We have learned that valence bond theory helps us to predict sigma and pi bondin
We have learned that valence bond theory helps us to predict sigma and pi bonding in molecules. All of the following statements about molecular bonding are true, but which stateme…
We have list of players, which is represented in form like this:
We have list of players, which is represented in form like this: <div class="players_list">    <div class="player" data-points="500">         <div class="name">P…
We have magazines being produced in PDF format, two columns on a page, a mixture
We have magazines being produced in PDF format, two columns on a page, a mixture of text and images, but never overlapping. Is there any PDF 2 HTML software that doesn't suck? We …
We have many windows services and web apps which all rely on a lot of common set
We have many windows services and web apps which all rely on a lot of common settings. Currently we use just appSettings as needed and they are referenced by key. Some of the sett…
We have our web servers running in AWS EC2. We have about 30 API Keys/passwords/
We have our web servers running in AWS EC2. We have about 30 API Keys/passwords/etc (sensitive data) which is set in the environment for our app to use. Whenever we deploy, we sta…
We have reaction equation as : 2Al(s) + 6HCl(aq) 2AlCl 3 (aq) + 3H 2 (g) moles o
We have reaction equation as : 2Al(s) + 6HCl(aq) 2AlCl3(aq) + 3H2(g) moles of Al = mass of Al / molar mass of Al = 10g / 27g/mol = 0.37 mol moles of HCl = molarity x volume in lit…
We have recently studied mechanisms for nuclephilic substitution at saturated ca
We have recently studied mechanisms for nuclephilic substitution at saturated carbon atom sites. A similar reaction also occurs with some aromatic halides. The reaction shown belo…
We have seen in class that the Celsius temperature scale is a linear scale based
We have seen in class that the Celsius temperature scale is a linear scale based on setting the freezing point of water (at atmospheric pressure) to be 0C and the boiling point of…
We have seen in class that the Celsius temperature scale is a linear scale based
We have seen in class that the Celsius temperature scale is a linear scale based on setting the freezing point of water (at atmospheric pressure) to be 0C and the boiling point of…
We have seen many new things in the last five to seven years on the web: Faceboo
We have seen many new things in the last five to seven years on the web: Facebook, HTML5 appeared, new browsers grew strongly, Google failed with Wave. Facebook, GTalk and Gmail a…
We have seen that the S_N2 reaction of ethyl bromide (1) and iodide proceeds via
We have seen that the S_N2 reaction of ethyl bromide (1) and iodide proceeds via transition state 3 to furnish the products ethyl iodide (4) and bromide, Eq. (1). We argued that t…
We have some gas in a cylinder. The diameter of the cylinder is 8.1 cm. The mass
We have some gas in a cylinder. The diameter of the cylinder is 8.1 cm. The mass of the piston is 13.5 kg. The atmospheric pressure is 9.4 x 10^4 Pa. (a) Find the pressure (Pa) of…
We have some pretty old, clunky .Net 1.1 apps in our business that - rather than
We have some pretty old, clunky .Net 1.1 apps in our business that - rather than be forcably upgraded - just get an iFrame added so that new functions can be dropped in. It's beco…
We have some requirements to send emails when various field values are changed i
We have some requirements to send emails when various field values are changed in our system. It's an asp.net system using linq to sql with javascript/jquery. Is it preferred to c…
We have started working on an in-class application. I have the required files fo
We have started working on an in-class application. I have the required files for this assignment (Employee, Product, ServiceClass and JAVAMART [containing the main() method]). Yo…
We have the freedom to choose how to live life. When we make our own choices, we
We have the freedom to choose how to live life. When we make our own choices, we are demonstrating autonomy, which is important in maintaining social health. We are powerful! Unfo…
We have the reaction 2 A(aq) +B(aq) + 3 C(aq) ? 2 D(aq) + 2 E(aq) + 3F(aq) . At
We have the reaction   2 A(aq) +B(aq) + 3 C(aq) ? 2 D(aq) + 2 E(aq) + 3F(aq) .   At 25oC, we start with a solution that is 0.977 M in A(aq), 0.655 M in B(aq), and 0.911 M in C(aq)…
We have the unsorted array A[1...n]. Find the largest key in the unsorted portio
We have the unsorted array A[1...n]. Find the largest key in the unsorted portion of the array (initially the entire array s unsorted) and swap this with the last position in the …
We have this cylinder in our lab which contains 3g of oxygen and is fitted with
We have this cylinder in our lab which contains 3g of oxygen and is fitted with a piston. The internal diameter of the cylinder is 8cm. On a fine Sunday morning, the graduate stud…
We have titration of 20,0 mL of Sn2+(aq) 0,00500 M with Ce4+ 0,0200 M in HCl 1 M
We have titration of 20,0 mL of Sn2+(aq) 0,00500 M with Ce4+ 0,0200 M in HCl 1 M that gives Sn4+ and Ce3+. The equivalent point is found par potentiometric method with Pt as elect…
We have to do a pre-lab for chemistry. I was just wondering if anyone could help
We have to do a pre-lab for chemistry. I was just wondering if anyone could help me with the following questions. What are the ingredients in common home garden fertilizers? Cite …