hot air rises up in the balloon and lifts the balloon up
Answer:
C.Nucleus
Explanation:
The cells are all prokaryotic . This means they do not have a nucleus or any other structures which are surrounded by membranes . ... It is called chromosomal DNA and is not contained within a nucleus.
To answer this question you need to know the molecular mass for both atoms. Nitrogen molecular mass is 14. Oxygen molecular mass is 16. If the 63.65% mass is nitrogen, then the 36.35% would be oxygen.
Then the ratio of nitrogen/oxygen would be: (63.65% /14) / (36.35% /14)= 4.53 /<span>2.28 = 2
</span>That mean there will be 2 nitrogen for every 1 oxygen. The molecular formula should be N2O
Answer:
Paraffin wax (or petroleum wax) is a soft colorless solid, derived from petroleum, coal or shale oil, that consists of a mixture of hydrocarbon molecules containing between twenty and forty carbon atoms. It is solid at room temperature and begins to melt above approximately 37 °C.
