Find the errors in the following code snippets. public static sum(int num) { int num = 2; int i; double sum = 0; while (i < num) { sum += i; }}

How many lone pairs of electrons are present on the nitrogen atom in the Lewis structure of NCl3?

What is the output of the following program? public static void main(String[] args){   int num1 = 16;   int num2 = 26;   double num3 = 1.5;   int num4 = num3 + num2 – num1;   System.out.println(num4);}

What is the output of the program? public static void main(String[] args){   int num1 = 6;   int num2 = 36;   double num3 = 10.5;   int num4 = num3 + num2 – num1;   System.out.println(num4);}

A balloon that contains 0.500 L of helium at 25°C is cooled to 11°C, at a constant pressure. What volume does the balloon now occupy? DO NOT INCLUDE THE UNIT IN YOUR ANSWER. (Neatly write your calculation on a scratch paper, show your work slowly on the webcam before you submit the test. Take a photo of your work, and submit it on Final Exam Work assignment on the module.) 

Which species is a diprotic acid? Consider the numbers in the chemical formulas as subscripts, and ionic charges as superscripts.

What is the chemical formula of lead(II) perchlorate? Consider the numbers in the chemical formulas as subscripts, and ionic charges as superscripts.

Rank the atoms Br, Cl, and K in order of increasing (low to high) electronegativity.

Which species can act as a Brønsted-Lowry acid? Consider the numbers in the chemical formulas as subscripts, and ionic charges as superscripts.

Given a positive integer n, the following rules will always create a sequence that ends with 1, called the hailstone sequence: If n is even, divide it by 2 If n is odd, multiply it by 3 and add 1 (i.e. 3n +1) Continue until n is 1 Write a function that takes an integer n as input and prints the hailstone sequence starting with the integer entered. Format the output so that ten integers, each separated by a tab character (\t), are printed per line. The output format can be achieved as follows: System.out.print(n + “\t”); Ex: If the input is: 25 the output is: 25 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1 Note: you don’t need to implement a main method.