Answer:
The concentration of a solution means the amount of solute present in a given or specific amount of solution. (presented in percentage)
For example, the Normal Saline solution normally used for different scientific experiment or so. The saline water has 0.9% of salt (sodium chloride). This is the concentration of solution of salt.
Answer:
Following is the detailed answer as needed.
<h3>I hope it will help you!</h3>
Explanation:
1.
#include <iostream>#include <string>
using namespace std;
int main(){ string chars; // This is where we will put our @ signs and print them for(int x=0;x < 5; x++){
chars = chars + '@'; // This will concatenate an @ sign at the end of the variable cout << chars << "\n"; }}
2.
#include <iostream>#include <string>
using namespace std;
int main(){ string name; // Our variable to store the name cout << "What is your name? \n"; // Asks the user for their name cin >> name; cout << "\nWell, hello " << name << "!";}
3.
#include <iostream>#include <string>
using namespace std;
int main(){ int number; // Our variable cout << "Enter a number\n"; // Asks for a number cin >> number; cout << "You entered " << number << "%!";}
4.
#include <iostream>#include <string>
using namespace std;
int main(){ int number; // Our variable cout << "Enter a number\n"; cin >> number;
int check = number % 2; // The modulo operator (the percent sign) gets the remainder of the quotient if (check == 0) { cout << number << " is even!"; // If the remainder is 0 then it prints out "x is even" } else { cout << number << " is odd!"; // If the remainder is not 0 then it prints out "x is odd" }}
5.
#include <iostream>#include <string>
using namespace std;
int main(){ float r; // Our variable cout << "Enter a radius\n"; cin >> r; if (r < 0){ cout << "Lol. No."; // If the radius is less than zero print out that message } float circumference=2*3.14*r; float area=r*r*3.14; cout << "\n\n Circumference of circle: " << circumference; cout << "\n Area of circle: " << area;}
Answer:
int a[10] = {10,20,30,40,50,60,70,80,90,100};
Explanation:
In the above statement, we declare the integer data type array variable that is 'a' then, pass its index value that is 10 which means it contains only 10 values and initialize the components of the array variable that is starting with 10 and end at 100 in the difference of 10. So, the following declaration is correct according to the statement.
