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A nugget of gold with a mass of 521g is added to 50.0ml of water. the water level rises to a volume of 77.0mL. what is the denisty of the gold?
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An adult patient that weighs 200lbs. was given 970mg of aspirin to reduce a fever, in the hospital. since aspirin is percribed at a dose of 6.5 mg per kilogram of body weight in adult, how much aspiring should the patient have received?
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A dose of aspirin of 5.0 mg per kilogram body weight has been percribed to reduce the fever of an infant weighing 8.5 pounds. the number of milligrams of aspirin that should be admininstered is
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A semiconductor laser has a total current that comprises a bias current I(dc) and a small
signal ac current i(ac). The laser threshold current is I(th) = 50 mA. When I(dc) = 75 mA and
i(ac) = 0, the laser output power is P(output) = 2.5 mW.

By means of a sketch, show how you expect the ac component of the modulated
optical power to behave as the frequency of the driving current ω is increased but
its amplitude is maintained constant.
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The next three (3) problems deal with the titration of 421 mL of 0.501 M carbonic acid (H2CO3) (Ka1 = 4.3 x 10-7, Ka2 = 5.6 x 10-11) with 2.1 M NaOH.

1. What is the pH of the solution at the 2nd equivalence point?

2. What will the pH of the solution be when 0.1316 L of 2.1 M NaOH are added to the 421 mL of 0.501 M carbonic acid?

3. How many mL of the 2.1 M NaOH are needed to raise the pH of the carbonic acid solution to a pH of 6.019?
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Mass of test tube & 250mL beaker 130.729g. Mass of test tube compound A 131.756g. Heat test tube and compound A. Mass of test tube 250 mL beaker and compound B 131.369g Add 2mL concentrated nitric acid to test tube and heat. Add 2mL of HNO3 and heat. Mass of test tube 250mL beaker compound C (CuO) 131.071g. Mass of test tube 250mL beaker and copper 130.997g.

Using your experimental data calculate: mass of copper in compounds A,B,C. Mass of other element in compound A and B. Mass of oxygen in compound C.
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I need a JS Code to Work with the following HTML Code:
<!DOCTYPE html>
<title>Shopping List</title>
<script type="text/javascript" src=""></script>
<p>Use the field below to add items to your shopping list.</p>
<input type="text" name="txtItem" id="txtItem" placeholder="Enter an Item" />
<br />
<br />

<button onclick="AddItem();">Add Item</button>
<button onclick="RemoveLastItem();">Remove Last Item</button>
<div id="printedList"></div>

I came up with this:
var shoppingList = ['Milk', 'Eggs', 'Bread'];
var outputDIV = document.getElementById('printedList');

function AddItem(){
document.getElementById('printedList').innerHTML = shoppingList;
function RemoveLastItem(){
document.getElementById('printedList').innerHTML = shoppingList;

I need to to have it to involve this:

shoppingList.push('item to add');


and lastly the ouputDIV

outputDIV.innerHTML = shoppingList.toString();

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Find the biggest number from a sequence of input numbers from keyboard.
Hint: use of Scanner class to accept input and hasNextInt() function
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If a person jogs around a 400 meter track 4 times and starts and ends in the same place what is the displacement in meters (m) that the jogger has ran?
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What is the displacement of an object that traveled 10 m East and then 22.1 m north?
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