6) In Linux, to execute a program, command or shell script, you type its name on the command line, possibly with options or arguments, and then press Enter. Given this procedure, if a program, command, or shell script is available on the system, but when you type its name on the command line, you get an error message saying that the program, command, or shell script does not exist, what do you think the problem is? Show an example in your screenshot.

Write a function balancechemical to balance chemical reactions by solving a linear set of equations. the inputs arguments are: reagents: symbols of reagents in string row array products: symbols of products in string row array elements: elements in the reaction in string row array elcmpreag: elemental composition of reactants in two dimensional numeric array elcmpprdcts: elemental composition of prducts in two dimensional numeric array hint: the first part of the problem is setting up the set of linear equations that should be solve. the second part of the problem is to find the integers from the solution. one way to do this is to mulitiply the rational basis for the nullspace by increasing larger integers until both the left-and right-side integers exist. for example, for the reaction that involves reacting with to produce and : reagents=["ch4", "o2"]; products =["co2", "h2o"]; elements =["c","h", "o"] elcmpreag=[1,4,0;

Respond to the following in three to five sentences. select the workplace skill, habit, or attitude described in this chapter that you believe is most important for being a successful employee.

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