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storchak [24]
2 years ago
14

What ion is formed when an atom of mercury (Hg) loses two electrons?

Computers and Technology
2 answers:
mel-nik [20]2 years ago
7 0
The answer is D hg+2
serious [3.7K]2 years ago
5 0
When the atom loses electrons its negative charge decrease so it becomes positive ion the answer: D) Hg+2.
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From the standpoint of the governing bodies of .com, why is it important that owners of individual domains maintain authoritativ
mixer [17]

Answer:

Explanation:

A subdomain is really important on the internet, we can categorize our blog, e-commerce or simple informative website, for example, if we want to have a blog and e.commerce of the same topic, we can have a subdomain for each website, if we separate our website, and we administrate our content is a good signal for SEO, we could have more promotion in search engine.

4 0
3 years ago
Write a destructor for the CarCounter class that outputs the following. End with newline.
ycow [4]

Answer:

Following are the code to this question:

CarCounter::~CarCounter()//Defining destructor CarCounter

{

cout << "Destroying CarCounter\n";//print message Destroying CarCounter

}

Explanation:

Following are the full program to this question:

#include <iostream>//Defining header file

using namespace std;

class CarCounter //Defining class CarCounter

{

public:

CarCounter();//Defining constructor CarCounter

~CarCounter();//Defining destructor CarCounter

private:

int carCount;//Defining integer variable carCount

};

CarCounter::CarCounter()//declaring constructor  

{

carCount = 0;//assign value in carCount variable

return;//using return keyword

}

CarCounter::~CarCounter()//Defining destructor CarCounter

{

cout << "Destroying CarCounter\n";//print message Destroying CarCounter

}

int main() //Defining main method

{

CarCounter* parkingLot = new CarCounter();//Defining class object parkingLot

delete parkingLot;//

return 0;

}

  • In the given C++ language code, a class "CarCounter" is defined, and inside the class, a "constructor, Destructors, and an integer variable" is defined.  
  • Outside the class, the scope resolution operator is used to define the constructor and assign value "0" in the integer variable.  
  • In the above-given code, the scope resolution operator, to define destructor and inside this cout function is used, which prints a message.  
  • In the main method, the class object is created, which automatically calls its class constructor and destructors.  
7 0
3 years ago
Who should get the copyright credit for a piece of computer art: the CPU, the software, or the programmer? Explain your reasonin
yulyashka [42]

Answer:

The programmer.

Explanation:

The CPU (central processing unit or simply the processor) is the brain of the computer system, it processes data at a very fast rate depending on it's processing speed. But it only relates to speed of data processing and a link between components of the system.

A software is a program code at executes a task in the system. It a logical and follows an algorithm to solve a given task. Computer systems do not generate  lines of code by itself, but instead, A programmer writes the code to create the software used by the system.

6 0
2 years ago
Individuals and businesses have concerns about data security while using Internet-based applications. Which security risk refers
Katen [24]

Answer:

Spam

Explanation:

If you receive in bulk the unsolicited messages, then that does mean that your inbox is being spammed. This will not harm you but you will lose the Gb that is allocated to your mailbox. And if you will not check then your mailbox will soon be full, and you might not receive some of the important messages that you should reply to immediately.

6 0
3 years ago
Using the XML Document below (library with books), define the following queries in XQuery: (a) Give the titles of all Books sort
Softa [21]

Answer:

Explanation:

a)use order by clause for sorting

for $x in doc("books.xml")/bib/book order by xs:float($x/price) return $x/title (default sorted in ascending order)

or

for $x in doc("books.xml")/bib/book order by xs:float($b/price) descending  return $b/title (sorted in descending order)

b)doc("books.xml")//book[author = 'Abiteboul']

c)for $x in distinct-values(doc("bib.xml")/bib/book/author)

return <res>

<name>{$x}</name>

<count>

 {count (doc("bib.xml")//book[exists(indexof(author,$x))]) }

</count>

<res>

3 0
2 years ago
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