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Find the molarity of the solution.
1) How would you prepare 1 liter of .002M Na2S2O3 from a solution which was 0.1 M Na2S2O3? 2) What is the molarity of a solution made by mixing 25ml of 8.0 M HCl with 300 ml of 2.0 M HCl?
A gas cylinder is filled with pure ammonia. Which term or terms could be used to describe the contents of this gas cylinder?
The contents of the closed box in each of the following illustrations represent a system, and the arrows show the changes to the system during some process. The lengths of the arrows represent the relative magnitudes of ...
Suppose a scientist repeats the Millikan oil-drop experiment but reports the charges on the drops using an unusual (and imaginary) unit called the warmomb (wa). The scientist obtains the following data for four of the dr ...
Answer these questions: 1. At pH 9.2, seconal absorbs at 239 nm. At pH 13, the absorbance shifts to 254 nm. Of what class of compounds is this characteristic and why? 2. Three compounds were found to have the s ...
Dear Sir, I would be grateful for your help, If you could explain the trend in boiling points from phosphine to stibine. I would also want to know why the boiling point of ammonia does not follow this trend?
Mass spectrometry is more often applied to molecules than to atoms We will see in Chapter 3 that the molecular weight of a molecule is the sum of the atomic weights of the atoms in the molecule. The mass spectrum of H2 i ...
The radius of an atom of gold (Au) is about 1.35A0 (a) Express this distance in nanometers (nm) and in picometers (pm). (b) How many gold atoms would have to be lined up to span 1.0 mm? (c) If the atom is assumed to be a ...
Explain and show the Chemical properties of tihydric alcohol
1. Assume that you are on a planet whose atmosphere does not contain carbon dioxide, only nitrogen, oxygen, and water vapor. (a) What would be the pH of the rain at 298K? (b) Lets assume the alien life on the planet live ...
Chemistry Q's 1) A garage that specializes in foreign cars had a small magnesium fire when a car part was ignited. The mechanic knew from his training that he should not use water but could use a dry powder like a sodium ...
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