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a) Describe in detail the concept of conjugate acid-base pairs using the equation below to illustrate your answer. [4 marks] H3PO4 + NaOH→ NaH2PO4 + H2O (b) To ascertain the purity of an active ingredient X, an aqueous solution of X needs to be titrated against 0.50 M HCl. What should be the pH of an aqueous solution of 0.50 M HCl? [3 marks]
You found an exciting summer job for five weeks. It pays Php150.00 per hour. Suppose that the total tax you pay on your summer job income is 14%. After receiving your pay, you spend 10% of your net income to buy new clothes and other accessories for the next school year and 1% to buy school supplies. After buying clothes and school supplies, you use 25% of the remaining money to buy savings bonds. For each peso you spend to buy savings bonds, your parents spend Php 0.50 to buy additional savings bonds for you. Write a program that prompts the user to enter the number of hours you worked each week. The program then outputs the following:
Your income before and after taxes from your summer job
The money you spend on clothes and other accessories
The money you spend on school supplies
The money you spend to buy savings bonds
The money your parents added for your savings bonds.
The money left from your income for the week
You found an exciting summer job for five weeks. It pays Php150.00 per hour. Suppose that the total tax you pay on your summer job income is 14%. After receiving your pay, you spend 10% of your net income to buy new clothes and other accessories for the next school year and 1% to buy school supplies. After buying clothes and school supplies, you use 25% of the remaining money to buy savings bonds. For each peso you spend to buy savings bonds, your parents spend Php 0.50 to buy additional savings bonds for you. Write a program that prompts the user to enter the number of hours you worked each week.
The average length of time for students to register in the second semester at a certain university has been 70 minutes. A new registration procedure is being tested. If a random sample of 15 students have an average of 45 minutes with a standard deviation of 30 minutes under the new system, can you conclude that the new system is faster than the old one? Assume that the average length of time is normally distributed. Use α=0.05.
Lowest and Highest score
The teacher gave out the scores of the science quiz conducted last week and asked the ones with the lowest and highest scores to group up. Print the names of the students with minimum and maximum scores, respectively.
Note: In case of a tie, choose the name which comes first in the (dictionary order).
Sample Input1
2
shakti 24
disha 26
Sample Output1
shakti disha
Sample Input2
3
ajay 23
bijay 24
sanjay 23
Sample Output2
ajay bijay
Alex is found of doing string programs. One day his professor gave him a string based question to solve in a linear time complexity. The program is to change a strit to its diagonal string inter the form of X ( I. e Diagonal from left right and from right left) help him finish it
In this task, you are being asked to write a loop in Java.
Write a program that uses while loops to perform the following steps:
a) Prompt the user to input two integers: startingNum and endingNum (startingNum must be
less than endingNum).
b) Output all even numbers between startingNum and endingNum.
c) Output the sum of all even numbers between startingNum and endingNum.
d) Output the numbers and their squares between startingNum and endingNum.
e) Output the sum of the square of the odd numbers between startingNum and endingNum.
1. Create a program called WhileLoops.java. All loops will be written in this file.
2. Create appropriate variables and assign values using a Scanner object.
3. Correctly display appropriate messages.
1. The price of a can of soft drink is $1.25 and the marginal utility of the second can consumed is 10 Utils. The marginal utility of the third donut is 4 utils. You should only consume the third donut if the price of donut is less than or equal to ______________?
1. The price of a can of soft drink is $1.25 and the marginal utility of the second can consumed is 10 Utils. The marginal utility of the third donut is 4 utils. You should only consume the third donut if the price of donut is less than or equal to ______________?
Write and use utility functions power(x,n) and fact(n), which returns the nth power of x and factorial of n respectively. Write a driver that read and stores input value of x in an integer pointer and finds its exponential. Use as many terms as needed to improve the accuracy of the result.
#340153 on Dec 2023