what is Physical quantity?
What is Transition Metal ? Explain With Example !
What is chemical Substance ? Please Explain with Example!
what is difference between atomic mass and atomic weight ? Explain
what is difference between chemical property and physical property?
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 ?
How would I convert grams into moles, and vice versa? Please make is as simple as possible! Thanks!
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...
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...
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!
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...
how many moles of phosphorus are in a mixture containing 4.0x1023 molecules of PCL3?
Ca(OH)2+H3PO4->Ca3(PO4)2+HOH This one's a bit difficult to figure out. Thanks!
Calculate the molar solubility of a hypothetical metal sulfide, MS, in a solution saturated with H2S at 25C. The pH of the solution is 3.44. Kspa for MS is 1.7 x 10-3. I know that I...
Calculate the density of Helium, He, in grams per liter at 21 degrees C and 752 mmHg. The density of air under these conditions is 1.188 g/L. What is the difference in mass between 1 liter of air...
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...