Chemistry
Urea is a very important nitrogenous fertilizer. It's formula is CON2H4. Calculate the percentage of nitrogen in urea. (C = 12, O = 16, N = 14 and H = 1).
Related Questions
In a compound of magnesium (Mg = 24) and nitrogen (N = 14), 18 g of magnesium combines with 7g of nitrogen. Deduce the simplest formula by answering the following questions.
(a) How many gram-atoms of magnesium are equal to 18g?
(b) How many gram-atoms of nitrogen are equal to 7g of nitrogen?
(c) Calculate simple ratio of gram-atoms of magnesium to gram-atoms of nitrogen and hence the simplest formula of the compound formed.
Barium chloride crystals contain 14.8% water of crystallisation. Find the number of molecules of water of crystallisation per molecule.
Determine the formula of the organic compound if it's molecule contains 12 atoms of carbon. The percentage compositions of hydrogen and oxygen are 6.48 and 51.42 respectively.
A compound with empirical formula AB2, has the vapour density equal to it's empirical formula weight. Find it's molecular formula.