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Chemistry problem help please!

How would you prepare 1.5 Liters of 0.5 M of HNO3 if you only have 18 M stock solution to dilute? ps the answer is .0848 but i dont get how they got that! please help.-M1V1=M2V2 18 x V1 = 0.5 x 1.5 =

10 pts science chemical compounds need help with studying for test

1.what compunds are brittle and have high melting points covalent organic ionic nucleic 2.what force of attraction holds atoms or ions together chemical bond chemical reaction nucleic acid neutraliz

Calculate the cell potential at 25 degrees using the Nernst equation.

Calculate the cell potential at 25 degrees Celsius based upon the overall reaction: 3Fe 3+(aq) + Al(s) => 3Fe (aq) + Al 3+ (aq) if [Fe 3+] = 0.300 M, [Fe 2+] = 0.150 M, and [Al 3+] = 0.300 M. The stan

Calculating pH using pKa

Im stuck on this question, can someone explain to me how to do it? what is the pH for the solution made from 11.10mL of 0.2780 M NaOH solution mixed with 70.20mL of 0.1300M ammonium chloride solution

In a voltaic cell: Ni2+/Ni//Ag+/Ag basic battery information

Which is the cathode and which is the anode? What is the overall redox equation for this batter? Which metal will have a larger mass when the battery reaches equilibrium? Thanks to all who contribute,

Chemistry Question on burning

The equation for the combustion of methanol is the following: 2CH3OH + 3O2 -> 2CO2 + 4H20 What volume of oxygen at STP is required to completely burn 35.0g of methanol?-2 CH3OH + 3 O2 → 2 CO2 + 4 H2O

How does temp. and pressure affect the solubility of solids and gases in liquids

Pressure affects the solubility per square inch, centimeter, whatever unit of measurement you are using. Temperature affects the rate at which solids and gases dissolve in liquids. If the liquid is he

Chemistry Acids/Bases Questions!

Hi, a few Chem problems I just cant get. Any help is greatly appreciated! 1. Calculate the molarity of an HCl solution if 30.8mL of the solution is neutralized by 15.5 mL of 0.451M NaOH. 2. The net

What is the balanced equation for the titration of potassium permanganate (KMnO4) and Iron (II) "Fe+2"

What is the balanced equation for the titration of potassium permanganate (KMnO4) and Iron (II) Fe+2 ? Thanks.-Adding the half-equations: OXIDATION: Fe^2+(aq) → Fe^3+(aq) + e‾ REDUCTION: MnO4^-(aq)

Need help calculate pH please

I missed a couple of days in Chemistry because I was sick and although I asked my teacher for help and looked at the book, Im still a little confused on what to do here. Can someone please show me ste

Given K and initial reactant concentrations, calculate concentrations at equilibrium

Please explain as much as you can:) And also, is this an ICE problem?-Yes Its an Ice problem FOR EXAMPLE. A....+.....2B--->.....C......+...D 1M.........1M..........0............0 -x............-2x....

Are only things that were once alive...

Combustible? Is there anything combustible that for absolutely certainty not a byproduct of life? I dont mean can it melt or can it glow when red hot, or can it be burnt to a crisp in an oven. What

How do Chemist find out the Element in a Planet by using colour

Elements emit certain lights at certain wavelengths we combine the observed lights with what we have produced in labs to determine the elements in planets

Recrystallization in the pharmaceutical industry

So i know they use this process to purify substances that are being made into drugs. my questions are; what is being made in what stage is it used (big, middle, end) how is it beneficial. if you know

How do i find the mass in an impure substance

I have a .4230g sample of impure sodium nitrate.When its heated, all of the sodium nitrate is converted to .1478g of sodium nitrite and oxygen gas. I need to find the percent of sodium nitrate in the
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