Consider the formation of ammonia (NH3) as per the following reaction N2 (g) + 3H2 (g) → 2NH3 (g) Suppose that 3 moles of N2 react with 3 moles of H2, how many moles of reactant in excess are present after the reaction has completed? 

Which of the following statements refer to different shapes of graphs than others? 

Which of the following is a FALSE statement regarding the modern periodic table?

The number of atoms in 2.45 moles of copper is (Given: 1 mol  = 6.022×1023)

An Argon isotope has an atomic number (Z) of 18 and a mass number (A) of 40. How many neutrons does it contain?

Which of the following statements about the properties of matter is FALSE?

When writing at a college level, it is never acceptable to use simple sentences.

A writer wants to emphasize a key idea by placing it at the end of a sentence. Which aspect of syntax is being used?

What is the significance of establishing ‘tone’ in academic writing?

 Which of the following is a subordinating conjunction?