Advertisements
Advertisements
प्रश्न
Which of the following is/are true with respect to carbon-12.
विकल्प
relative atomic mass is 12 u
oxidation number of carbon is +4 in all its compounds.
1 mole of carbon-12 contain 6.022 × 1022 carbon atoms.
all of these
उत्तर
relative atomic mass is 12 u
APPEARS IN
संबंधित प्रश्न
Calculate the molecular mass of the following in u.
C2H5OH
What is the ratio of molecules in 1 mole of NH3 and 1 mole of HNO3?
Solve problem:
Calculate the number of an atom of the following (Given: Atomic mass of I = 127 u).
254 u of iodine (I)
Solve problem:
24 g of carbon reacts with some oxygen to make 88 grams of carbon dioxide. Find out how much oxygen must have been used.
Solve problem:
Calculate the number of atoms of the following. (Average atomic mass : N = 14 u, S = 32 u)
1.6 g of sulfur
Calculate the number of atoms of hydrogen present in 5.6 g of urea, \[\ce{(NH2)2CO}\]. Also calculate the number of atoms of N, C, and O.
An element X has the following isotopic composition 200X = 90%, 199X = 8% and 202X = 2%. The weighted average atomic mass of the element X is closest to
One amu is equal to ________.
Calculate mass of 3.01 × 1024 atoms of an element having atomic mass 21.13.
Which symbol replaces the unit of atomic mass, amu?
