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Bob employs a painting company that wants to use your services to help create an invoice generating system. The painters submit an invoice weekly. They charge $30 per hour worked. They also charge tax – 15%. Bob likes to see an invoice that displays all the information – number of hours, the charge per hour, the total BEFORE tax and the total AFTER tax. Since this is an invoice, we also need to display the name of the company (Painting Xperts) at the top of the invoice. Display all of the information on the screen.
• what is the mass in grams of 1.204 x 10²³ molecules of H2O?
• how many formula units are there in 0.175 g of LiF
Calculate the total hardness of a sample of water containing following impurities 16.2
mg/L of Ca(HCO3)2, 11.1 mg/L of CaCl2, 60 mg/L of CaSO4 and Mg(HCO3)2, 11.2 mg/L
of MgCl2, 60 mg/L of MgSO4 and 19 mg/L of Mg(NO3)2.
Calculate the molality of a sulfuric acid solution containing 24.4 g of sulfuric acid in 198 g of water. The molar mass of sulfuric acid is 98.09 g.
How many moles of water are equal to 1.204 x 10²³ molecules of H2O?
provide a solution.
Find out the number of occurrence of vowels, characters and digits in the given statements
Input:
#$@aghte123
AqEtImU@123
xyz@12345
Output:
2 5 3
4 7 3
0 3 5
Class Name : Worker
Name : To store the name of the worker
Basic : To store the basic pay in decimals
Worker (…) : Parametrized constructor to assign values to the instance variables
void display() : Display the workers details
Class Name : Wages
hrs : Stores the hours worked
rate : Stores rate per hour
wage : Stores the overall wage of the worker
Wages (…) : Parametrized constructor to assign values to the instance variables of both the classes
double overtime() : Calculates and returns the overtime amount as (hours*rate)
void display() : Calculates the wage using the formula wage = overtime amount + Basic pay and displays it along with the other details
Specify the class Worker giving details of the constructor () and void display ( ). Using the concept of inheritance, specify the class Wages giving details of constructor ( ), double overtime( ) and void display(). The main ( ) function must be written to perform the task.
- In acidic solution, dichromate ion oxidizes 0xalic acid, H2C2O4 (aq), to CO2 (g) in a reaction with Eocell =1.81V.
Cr2O72-(aq) + 3 H2C2O4(aq) + 8H+(aq) → 2Cr3+(aq) + 7H2O + 6CO2(g) ,
Design a c program the embed special characters as leading and trailing to the input string and display the output
Input:
Strnset
#
4
Output:
####set
Str####
iron crystallizes in a bcc latics with a unit cell length of 5.20armstrong at 20 degree centigrate calculate the atomic radiun of iron crystal
#340153 on Dec 2023