Gweedo8

find an atom which would have an electron with a quantum number of n=5, l=2, mL=0, mS=1/2 and a valence electron with a quantum number of n=6,l=1, mL=-1, mS=-1/2.

16 years ago

1. Tin and oxygen gas are reacted together to form Tin (IV) oxide, a solid. If a piece of tin foil, 8.25cm x 21.5cm x 0.60mm (density = 7.28g/cm3) is exposed to oxygen and all the tin reacts, what is the mass of the oxidized tin foil? (98.4g) 2. From the...

16 years ago

Aluminum reacts with sulfur gas to form aluminum sulfide. Initially 1.18 ml of aluminum and 2.25mol of sulfur are combined. 1. write a balanced equation? 2. what is the limiting reaction? 3. what is the theoretical yield of aluminum sulfide in moles? How...

16 years ago

What is the energy of a single photon from a helium -neon laser that emits light 632.8nm?

16 years ago

List 15 sets of quantum numbers (n,L,mL,ms) that could be used to describe all the electrons in phosphorous?

16 years ago

What is the total number of ions formed when 2.00 grams of calcium chloride are dissolved in 100 grams of water. (Ignore any ions formed by the water). Note, this is a bit of a trick question. Read the problem carefully.

16 years ago

A student needs to run an experiment to determine the amount of substance in the solution. As more of the substance is dissolved, the more red the solution becomes. He is planning on using an absorption spectrometer to measure how much of a wavelength wou...

16 years ago

Describe the molecular geometry around the carbon and oxygen atoms in oxalic acid. Make sure you include the bond angles.

16 years ago

I am trying to find the theoretical yield for this lab I am working on. The steps to finidng it would be great. In my lab I took 40mls of H2O + 4g of AgNO3+ 8g of NaCL then I stirred it and filtered in a buchner funnel to be left with 6.7496g of silver ch...

16 years ago

I had a snag from a question I asked yesterday, here is the thread. (My snag being the final post) I am trying to find the theoretical yield for this lab I am working on. The steps to finidng it would be great. In my lab I took 40mls of H2O + 4g of AgNO3+...

16 years ago

This is a different question then asked before,I had lab where I mixed 1.365 NaCL + AgNO3-->2.6242 AgCl. The 2 questions that I need help finding the answers to are: How much salt should be used to cause all of the silver nitrate to react? How much silver...

16 years ago

(L2bar/mol2) (L/mol) Acetylene 4.448 0.05136 Calculate the difference in pressure (in atm) when 100.0g of acetylene acts as an ideal gas versus as a real gas in a 100L tank at a temperature of 1000K.

16 years ago

I had to do this online lab and have a total of 8 questions at the end and I am stuck half way through. Can someone please walk me through the last few question? Here is the Lab and my homework: In this experiment, we will determine the heat of reaction f...

16 years ago

Online chemistry lab preparing standards help? I was told to prepare some standard for a chemistry lab and here where the instructions: Obtain a solution of known phosphate concentration. In this lab we will use (1.e-002M) potassium dihydrogen phosphate,...

16 years ago

I have this long online lab that I am working on and I am stuck on converting Molarity then ultimately finding the % of phosphoric acid in the cola? There is all of different steps I went through with information but I am going to try to give only the inf...

16 years ago

What volume of benzene (C6H6, d= 0.88 g/mL, molar mass = 78.11 g/mol) is required to produce 1.5 x 103 kJ of heat according to the following reaction? 2C6H6(l)+15O2(g)-->12CO2(G)+6H2O(g) :delta:Hrxn=-6278kj

16 years ago

A car accelarates from 40 mph to 60mph in 2.20 sec. determine the car's accelaration in gs. my answer is .911g Determine how far the car went during that 2.20 sec interval. 41.6 m

15 years ago

Math Horizons is a publication of the Mathematical Association of America. A recent issue reports that in the United States, graduating mathematics majors who also have studied actuarial science have an average first year income of 49,600. Suppose a rando...

15 years ago

excuse me the product was AgCl not NaCl, that probably does not change the step but thought I would correct myself.

16 years ago

In my math I took 8g of AgNo3/1.69.8731 g/mol=.0471 mol of AgNo3 Then since there is only one AgNO3 and one AgCL, then AgCl's has a mol of .0471, multiply that by its molecular weight of 143.321 and I receive 6.75 grams. not 3.4, where did I did I do some...

16 years ago

Disregard this thread I found the answer

16 years ago

Disregard this question I figured it out, THanks for all the help Bob

16 years ago

The last question on my assignment is to find the % of acetic acid in the vinegar. But their was another previous lab that we did do determine the molarity of NaOH which was .0307. So I started from the point where I took 10 mLs of diluted solution and 2...

16 years ago

I understand how you obtained the grams of acetic acid but how do you find the percent, I am so of acetic acid in vinegar?

16 years ago

(L2bar/mol2) (L/mol) Acetylene 4.448 0.05136 Calculate the difference in pressure (in atm) when 100.0g of acetylene acts as an ideal gas versus as a real gas in a 100L tank at a temperature of 1000K.

16 years ago

Calculate the experimental heat of reaction using qwater = - qreaction. (use the mass of the solution at maximum temperature to be equal to the mass of the water). (57.97C=-57.97C) Calculate the theoretical heat of reaction. Steps.. 1. Write a balanced eq...

16 years ago

THank you problem solved

16 years ago