1) A student performed this experiment with a watch glass that has a area of 956,667,666,076,834.6 nm². If the area of a stearic acid molecule is 0.21 nm² and it took 0.0000021 grams of stearic acid to form the monolayer, what is his approximate value for Avogadro's number? Molar mass of stearic acid is 282 g/mol.

2) A student calibrated a dropper and found that it delivered 1.00 ml of solution in 57 drops. If it took 5 drops to form his monolayer, and the stearic acidconcentration was 1.76 g/L, what mass (g) of stearic acid was in his monolayer?

3) If a watch glass has an area of 86.11 cm², what is its area in nm²?

4) A watch glass has a radius of 5.35 cm. What is the area of the watch glass in cm²?

5) If a student has a crystal with 818,795,544,682,724,600,000,000 molecules of iodine, what mass (g) of iodine does she have?

6) A student massed 22.65 grams of elemental iron. How many moles (mol) of iron does this represent?

7) When converting from mass in grams to moles it is necessary to divide by what? a)atomic number b) molar mass c) Avogadro's number d) the number of atoms in a mole

8) A student fills a balloon with air, to a volume of 20.0L. If it took 529,841,802,202,048,000,000,000 molecules of air to fill the balloon how many moles (mol) of air does that equal?

9) Avogadro's number is equal to what, and it represents what? a) 6.022e23, atoms in a molecules b) 6.022x10²³, atoms in a gram. c)6.022x10²³, atoms and/or molecules in a mole. d)6.022x10^-23, atoms and/or molecules in a mole.

Use Gauss's law to prove that the electric field outside any spherically symmetric charge distribution is the same as if all of the charge were concentrated into a point charge at the center of the sphere. Then use Gauss's law to prove that the electric field inside a spherically symmetric conductor carrying a net charge on its surface is zero.

Ok the question asks

Know the definitions for the following terms(writing the equation/formula only is not enough):

Magnetic Flux

Faraday's Law

Lenz's Law

It asks for all 3 and again just writing equation/formula is not enough.

Write a test program that prompts the user to enter 10 numbers and displays the mean and deviation, as shown in the following sample run:

Your program should contain the following functions:

// Compute the mean of an array of double values
double mean(const double x[], int size)
// Compute the deviation of double values
double deviation(const double x[], int size)

Write a test program that prompts the user to enter 10 numbers and displays the mean and deviation, as shown in the following sample run:

ex:

Enter ten numbers: 1.9 2.5 3.7 2 1 6 3 4 5 2
The mean is 3.11
The standard deviation is 1.55738

So this what I have:

#include <iostream>
#include <cmath>

using namespace std;

void displayVals(int vals[], int numVals, int sum);
void getVals(int vals[], int numVals);
double average(int sum, int numVals);
double stanDev(int vals[], double mean, int numVals);

int main()
{
   int numVals=10;
   int sum = 0;
   int vals[9];

   getVals(vals, numVals);
   cout << endl;
   displayVals(vals, numVals, sum);
   cout << endl;

}

void getVals(int vals[], int numVals)
{
   int index;
   cout << "Enter ten numbers :" << "\n";
   for (index = 0; index < numVals; index++) {
       cout << index + 1;
       cin >> vals[index];
   }
}

void displayVals(int vals[], int numVals, int sum)
{
   int index;
   for (index = 0; index < numVals; index++) {
       cout << index + 1;
       cout << vals[index] << ".\n";
   }

   cout << endl;
   cout << "The mean is ";
   cout << average(vals, numVals, sum) << ".\n";

   cout << endl;
   cout << "The standard deviation is: ";
   cout << stanDev(vals, numVals, sum) << ".\n";

}

double average(int sum, int numVals)
{
   double dsum = (double)sum;
   double dnumVals = (double)numVals;
   return dsum / dnumVals;
}

double stanDev(int vals[], double mean, int numVals)
{
   double sum = 0, dVals = 0, value = 0, variance = 0;
   for (int i = 0; i < numVals; i++)
   {
       dVals = (double)vals[i];
       value = (dVals - mean)*(dVals - mean);
       sum += value;
       variance = sum / (numVals);
   }
   return sqrt(variance);
}

What is the difference between a tit-for-tat strategy and a trigger strategy?

What type of gametes can be produced by simple non-disjunction of the sex chromosomes in a human male? Simple non-disjunction means that non-disjunction occurs in meiosis I or meiosis II, but not in both meiosis I and meiosis II. Choose all answers that are correct.

• 22, 0
• 23, XX
• 23, XY
• 24, XX
• 24, YY
• 24, XY
• 25, XXY
• 25, XXX

Alpha company produces two products, X and Y, that are sold to retailers. The budgeted sales volumes for the next quarter are as follows: Product Unit X 32000 Y 56000 The inventory of finished goods is budgeted to increase by 1000 units of X and decrease by 2000 units of Y by the end of that quarter. Materials A and B are used in production of both products. The quantities required of each material to produce one unit of the finished product and the purchase prices are shown in the table below: A B X 8kg 4kg Y 4kg 3kg Purchase price per kg $1.25 $1.80 Budgeted Opening Inventory 30000kg 20000kg The company plans to hold inventory of raw materials at the end of the quarter equal to 5% of the quarter's material usage budget. Required: A) Prepare the following budgets for the quarter: i) the production budget in units ii) the material usage budget (in kg) iii) the material purchases budget (in kg and $) B) What is the Master Budget and why is it useful?

1.List two to three things you wonder about that might be answered in this class. Examples: How does a water wave become a Tsunami? Why do I get “bounced” when my car goes over a big bump?

2. Identify a real world oscillating object. Include a photograph or sketch of the object.

managerial accounting

main topics from this course: Budgeting,Overhead and Marketing Variances,- Absorption Costs Systems and Cost Allocation

How does the information presented in this course compare with your life experiences and career goals?

What is the most significant concept from this course that you will carry with you as you continue your educational journey?

The equilibrium constant, K, for the following reaction is 7.00×10-5 at 673 K.

NH4I(s) <----> NH3(g) + HI(g)

An equilibrium mixture of the solid and the two gases in a 1.00 L flask at 673 K contains 0.308 mol NH4I, 8.37×10-3 M NH3 and 8.37×10-3 M HI. If the concentration of NH3(g) is suddenly increased to 1.50×10-2 M, what will be the concentrations of the two gases once equilibrium has been reestablished?

[NH3]=

[HI]=

***Please discuss in detail, the difference between the two medications Cimetidine and omeprazole and how they work in the digestive system with regards to controlling GERD**

1. Why librarians need to be familiar with online databases
2. What is online database?
3. overview of those two databases (jstor and project MUSE)
4. List of journals under their domains
5. Functionalities of each database
6. Layout and structural usability of each database
Comparison between those two databases (if any)

I WANT THIS CODE TO BE SIMPLE BECAUSE I AM NEW TO CODING AND I WANT TO KNOW THE DETAILS! straight C

Write a quiz program that helps a student learn the multiplication operation. A series of questions are asked, such as: What is 12 mod 5?Note: the numbers 12 and 5 were randomly generated by your program. After the user types in their answer, print a suitable message to the screen. The game ends after 4 wrong answers.

Develop the 8-point Discrete Fourier Transform (DFT) using butterfly diagrams for the discrete input sequence x(n) = {1, 2, 3, 4, 4, 3, 2, 1} using radix-2 Decimation in Frequency - Fast Fourier Transform (DIF-FFT) algorithm.