Chemistry
The number of molecules in 4.25 g of ammonia is:
(a) 1.0 × 1023
(b) 1.5 × 1023
(c) 2.0 × 1023
(d) 3.5 × 1023
Related Questions
Which of the following weighs the least?
(a) 2 g atom of N
(b) 3 x 1025 atoms of carbon
(c) 1 mole of sulphur
(d) 7 g of silver
Four grams of caustic soda contains:
(a) 6.02 x 1023 atoms of it
(b) 4 g atom of sodium
(c) 6.02 x 1022 molecules
(d) 4 moles of NaOH
Give three kinds of information conveyed by the formula H2O.