Acylinder of nitrogen gas (n2) weighs 550 grams. how many moles of nitrogen are present in the cylinder?
sodium azide is a colorless inorganic salt that can decompose to give sodium and nitrogen. it is an ionic compound and it is very soluble in water, but it is very toxic. the decomposition reaction usually take place at a very high temperature of 300 degree celsius under controlled conditions. the equation for the chemical reaction is given below:
2nan3 = 3n2 + 2na
we know that the total weight of the mixture of sand and salt = 5.24 g
the weight of the separated sand = 3.64 g
and the weight of the salt in the mixture = 5.24 - 3.64 = 1.6 g
so the percentage of sand in the mixture = (3.64/5.24) * 100 = 69.46
therefore, the percentage of sand in the given 5.24 grams mixture of salt and sand is 69.5%.