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what is difference between atomic mass and atomic weight ? Explain

What is chemical Substance ? Please Explain with Example!

What is Transition Metal ? Explain With Example !

finding quite tricky help me plsssss

Calculate the volume of air needed for the combustion of 1 kg of carbon. answer  8888.9

What is the answer in kJ?

calculate [OH- ] and pH for each of the following solutions. (Kw = 1.0 10-14.) A mixture that is 0.050 M in CH3COONa and 0.044 M in (CH3COO)2Ba

what is happening in chemical reactions at a molecular level ?

For the reaction N2(g)+3h2(g) =2NH3(g) The partial pressure of N2 and H2 are 0.80 and 0.40 atmosphere respectively at equilibrium. The total pressure of the system is 2.80 atm...

The equilibrium constant of the reaction h2 + Cl2= 2HCl at 100 C is 50. Of a one liter flask containing 1 mole of H2 is connected to a two liter flask containing two moles of Cl2, how many...

I've had this explained to me in class, but I just don't get it. Is there a simple way to learn it? Thank you!

How would I convert grams into moles, and vice versa? Please make is as simple as possible! Thanks!

Part A. Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgene can be produced by reacting carbon monoxide and chlorine gas...

For the reaction: CO(g)+NH3(g)<->HCONH2(g) The equilibrium constant is: K=0.207 at 400 K. If a reaction vessel is filled with initial concentrations 2.15M of CO and 2...

At what temperature would CO2 molecules have an rms speed equal to that of H2 molecules at 25 degrees C?

If I takes 4.67 times as long for a particular gas to effuse as it takes hydrogen under the same conditions, what is the molecular mass of the gas? (Note that the rate of effusion is inversely proportional...

The reversible chemical reaction: A+B<->C+D has the following equilibrium constant: Kc=[C][D]/[A][B]=4.1.   (a) Initially, only A and B are present, each at 2.00 M. What...

This is a solubility problem and I am a little confused on how to set it up.

how many moles of phosphorus are in a mixture containing 4.0x1023 molecules of PCL3?

Since polyatomic ions naturally have subscripts with them, then do we ignore them when trying to balance a chemical equation?