how many alpha hydrogen atoms present in simplest ketone? what is it?
546524
The simplest ketone is Acetone (C3H6O), and it has 6 alpha hydrogens.
50031
There r 20 amino acid,by combination of these amino acids diffirent proteins r formed.simple structure of a amino acidis like a central carbon atom(known as alpha carbon)to which a carboxilic group(-COOH) and a amine group(-NH2) and a side chain(-R group) attached,all amino acid have same structure but they differ to each other by side chain(-R group).
681864
alkyl phenyl ketone in trivial nomenclature, and phenyl alkanone in iupac
826844
H\n |    \nC=O:  (You need 2 lone pairs on Oxygen)\n |   \nH\n\nIt doesnt get much better than that :)
1086275
In scientific terms atoms are the smallest possible particle of a chemical element that retains its chemical properties. All atoms are made of the same basic elements, protons, neutrons and electrons , but each of the individual elements are made from different organizations of these materials. The basic structure of an atom is the nucleus, which is made of protons and neutrons (except hydrogen which only has a proton), and the electrons which, to over simplify it, "orbit" the nucleus. Elements are defined however by the number of protons in the nucleus, carbon always has 6 protons in it's nucleus, oxygen always has 8.\n\nAtoms are found EVERYWHERE. Everything you are, the air you breath, the things you smell, are all made of atoms, as others have said, it is the basic building block of everything, literally nothing would exist without them.\n\nIsotopes, contrary to what was said above, are in fact atoms, just a special kind of atom. The have the same amount of protons in their nucleus, hence they stay the same kind of element, but the have a different number of neutrons. I said above that hydrogen doesn't have a neutron in it's nucleus, and a standard hydrogen atom doesn't, but an isotope of hydrogen does, it's called deuterium, and it has 1 proton and 1 neutron in it's nucleus.\n\nDon't feel bad if you don't get it still, it really takes a class in chemistry to really get a handle on what exactly it all means. Good luck.
20193
Glycerin molecule is made of three carbon atoms (C), two hydrogen atoms (H), and three alcoholic hydroxyl groups (-OH). The chemical formula is C3H8O3.
889364
i am just starting chemistry, but i think that you multiplied hydrogen (H) by four, when it should be multiplied by 3, like the Oxygen (O).  otherwise it is correct.  you sould round to whatever your teacher tells you or to 6 significant digits, because that is the least amount you have.  the correct answer should be \n\n(considering your atomic weights are correct)\n\n[12.0107 x 3] + [1.00794 x 5] + [15.9994 x 3] + [1.00794 x 3] =  \n\ncalculate it out and it should work fine... (i think)
1151475
number of moles of hydrogen is 0.2\n\namount of water is 2.4
552992
ch4 for both.\nOne carbon atom and 4 hydrogen atoms. Simple!
947223
Alcohol, aldehyde, ketone, or carboxylic acid.
711529
With a little acid present as catalyst, the product is acetone plus methanol. The first product is 2-propenol, but that tautomerizes at once to acetone.
16762
The atomic number is the number of protons.
894676
Al(CH3COOH)3 means that in each molecule of that salt, you have one aluminium and three acetate.  Each acetate contains two carbon, two oxygen and four hydrogen.  So in total, you have: 1 Al, 6 C, 12 H, 6 O.\n\nBecause you state that you have one mole of that aluminium acetate, this means that you have 1 mole of Al, 6 moles of C, 12 moles of H, 6 moles of O, so 25 moles of atoms total.\n\nIf you had more salt, lets say 4,8 moles of Al(CH3COOH)3, then you would have to multiply everything by 4,8.
1167519
there would be approximately 2.648*10^24 acetone molecules.  This was done by first finding the number of gram in the volume by multiplying volume by the density.  This would give the number of grams which is then converted to moles.  Then you can use avagadro's number to multiply the number of moles to find the number of molecules.  The long equation is below\n325 ml * 0.7857 g/ml * 1/58.0798 mol/g * 6.0221 X 10^23 moleucles/mol\n\n0.7857 is the density of acetone\nacetone has a molecular weight of 58.0798 g/mol \nand avagadros number is approx. 6.0221 * 10^23\n*Note you must divide by the molecular weight to get the correct units at the end
907937
There is no such molecule as there are 3 families of simple hydrocarbons:\n1. the alkanes (Cn H2n+2) of which methane (CH4) is the first. This type of compound has all single bonds in a chain;\n2. the alkenes (Cn H2n) of which ethene (C2H4) is the first. This type of compound has one double bond; and\n3. the alkynes (CnH2n-2) of which acetylene (C2H2) is the first.  This type of compound has one triple bond.\n\nC2H3 fits none of these patterns. However it could be the empirical ('simpest') formula for C4H6 (butylene)
883737
Hydrogen gas molecules, H2
215729
K2IC4H6 + HNO3 ---  K2HI + NO3C4H6