guadagnamoqualcosa.blogspot.com
Come guadagnare su Internet: Offerte lavoro per freelancer: siti
http://guadagnamoqualcosa.blogspot.com/2008/10/offerte-lavoro-per-freelancer-siti.html
Come guadagnare su Internet. Non diventeremo ricchi. Ma ogni tanto potremo offrire una birra agli amici! Sabato 11 ottobre 2008. Offerte lavoro per freelancer: siti. Continua la mia serie di post riservata alle offerte di lavoro come freelancer, in quanto ritengo sia l'attività di lavoro più redditizia a disposizione online. Perchè ribadisco, lavorare da casa (work from home, dicono gli americani), è possibile, solo bisogna sapersi muovere e saper evitare gli imbrogli e le truffe continue su internet.
statisticaconr.blogspot.com
Statistica con R: Analisi della sopravvivenza: curve di Kaplan-Meier e modello di Cox
http://statisticaconr.blogspot.com/2009/09/analisi-della-sopravvivenza-curve-di.html
Esercizi di statistica descrittiva e di verifica delle ipotesi risolti e commentati con R. Links utili e libri. Giovedì 3 settembre 2009. Analisi della sopravvivenza: curve di Kaplan-Meier e modello di Cox. Le funzioni di sopravvivenza possono essere studiate con due metodi: il metodo attuariale e il metodo di Kaplan-Meier. Quest'ultimo viene utilizzato quando:. Si conosce il tempo esatto in cui avviene l'evento considerato (e non l'intervallo, come nel metodo atturiale). I dati vengono raccolti annualme...
statisticaconr.blogspot.com
Statistica con R: Regressione lineare multivariata
http://statisticaconr.blogspot.com/2009/08/regressione-lineare-multivariata.html
Esercizi di statistica descrittiva e di verifica delle ipotesi risolti e commentati con R. Links utili e libri. Lunedì 17 agosto 2009. Accolgo volentieri l'invito di Fabio. E mi accingo a cominciare alcuni post sulla statistica multivariata. Nella regressione lineare semplice. In generale si indica con Y la variabile dipendente, e con X seguito da un numero in pedice le variabili indipendenti che si suppone abbiano un effetto. Le X vengono chiamate predittori. Eccetera, sono i regressori. I quali rappres...
chemical-problems.blogspot.com
Chemical Problems and Solutions: August 2009
http://chemical-problems.blogspot.com/2009_08_01_archive.html
Chemical Problems and Solutions. Solving general chemistry problems. Monday, August 3, 2009. How many grams of water and carbon dioxide are formed after the combustion of 1.275 grams of sucrose? Recall that the chemical formula of sucrose is: $C {12}H {22}O {11}$, and its molecular weight is: $MW=342.34gr/mol$. The equation of combustion of sucrose is as follows:. C {12}H {22}O {11} O 2 rightarrow CO 2 H 2O$. This reaction must be balanced first. Rule[0.3cm]{8cm}{0.01cm} $. The balanced equation is:.
chemical-problems.blogspot.com
Chemical Problems and Solutions: Gas formation from reaction #2
http://chemical-problems.blogspot.com/2009/08/gas-formation-from-reaction-2.html
Chemical Problems and Solutions. Solving general chemistry problems. Saturday, August 1, 2009. Gas formation from reaction #2. Compute the oxygen volume (at standard conditions: 0°C, 1atm) that you need to burn 76.14gr of carbon disulfide in carbon dioxide and sulphur dioxide. Then compute the volume of carbon dioxide and sulphur dioxide and their percentage composition. The balanced reaction that take place is:. CS 2(l) { color{red} 3}O 2(g) rightarrow CO 2(g) { color{red} 2}SO 2(g)$. N {O 2}=3n {CS 2}$.
chemical-problems.blogspot.com
Chemical Problems and Solutions: Exercise Index
http://chemical-problems.blogspot.com/2009/07/exercise-index.html
Chemical Problems and Solutions. Solving general chemistry problems. Wednesday, July 15, 2009. Chapter 1: chemical compounds and formulas. Atomic and molecular weights: Problem 1. Chemical composition: weight and volume percent: Problem 1. Chemical analysis and compound's formula: Problem 1. Chapter 2: balancing equations. How to balance acid-base equations: Problem 1. How to balance redox equations: Problem 1. How to balance ionic equations: Problem 1. How to balance electrodic equations:.
chemical-problems.blogspot.com
Chemical Problems and Solutions: June 2009
http://chemical-problems.blogspot.com/2009_06_01_archive.html
Chemical Problems and Solutions. Solving general chemistry problems. Monday, June 15, 2009. Istantly balance your chemical equation: LINK. Subscribe to: Posts (Atom). 1 post/day = 1 problem with solution. 1 exercise for you / day! Subscribe to Chemical-problems via RSS. Or subscribe via e-mail:. Blogs info and utility. In this blog there are posts and comments.
chemical-problems.blogspot.com
Chemical Problems and Solutions: Redox equation and ionic form #4
http://chemical-problems.blogspot.com/2009/07/redox-equation-and-ionic-form-4.html
Chemical Problems and Solutions. Solving general chemistry problems. Thursday, July 30, 2009. Redox equation and ionic form #4. Balance this equation and put it in the ionic form:. MnI 2 NaBiO 3 H 2SO 4 rightarrow$. Rightarrow quad quad NaMnO 4 NaIO 3 Bi 2(SO 4) 3 Na 2SO 4 H 2O$. Using the inspection technique we have:. Color{red} a}MnI 2 { color{red} b}NaBiO 3 { color{red} c}H 2SO 4 rightarrow$. Begin{cases}Mn:a=d I:2a=e Na:b=d e 2g Bi:b=2f S:c=3f g H:2c=2h O:3b 4c=4d 3e 12f 4g h end{cases}$. Begin{case...
chemical-problems.blogspot.com
Chemical Problems and Solutions: Gas formation from reaction #3
http://chemical-problems.blogspot.com/2009/08/gas-formation-from-reaction-3.html
Chemical Problems and Solutions. Solving general chemistry problems. Sunday, August 2, 2009. Gas formation from reaction #3. A mixture of iron (II) sulfide contains 93% of iron sulfide and 3% of metallic iron. Compute the volume (at standard condition) of gas that is formed when 10 grams of the mixture react with acid. The two reactions that occur are:. FeS H rightarrow Fe {2 } H 2S$. Fe H rightarrow Fe {2 } H 2$. The first thing to do is balance the two reactions:. N {H 2S}=n {FeS}=0.11mol$. The total v...
chemical-problems.blogspot.com
Chemical Problems and Solutions: Useful links
http://chemical-problems.blogspot.com/2009/06/useful-links.html
Chemical Problems and Solutions. Solving general chemistry problems. Monday, June 15, 2009. Istantly balance your chemical equation: LINK. Leave a comment first! Try to solve the problem and leave a comment with your solution! You can use LaTex, putting the code between two dollar symbol (ie $ $ $ H 2SO 4$ $ $ = $H 2SO 4$). Subscribe to: Post Comments (Atom). 1 post/day = 1 problem with solution. 1 exercise for you / day! Subscribe to Chemical-problems via RSS. Or subscribe via e-mail:.
