7.0 g of nitrogen is reacted with 5.0 g of hydrogen to produce ammonia according to the chemical equation shown below. Which one of the following statements is false? N2(g) + 3 H2(g) 2 NH3(g)
A) 3.5 g of hydrogen are left over.
B) Hydrogen is the excess reactant.
C) Nitrogen is the limiting reactant.
D) The theoretical yield of ammonia is 15 g.
Question 2
Which of the following laws states that the properties of the elements recur in a repeating pattern when arranged according to increasing atomic number?
A) law of atomic numbers
B) law of constant composition
C) law of periodic properties
D) periodic law
E) none of the above
A hypothetical scenario illustrating the process of chemical selection
Directionality of the hydrogen bond
hydrogen
Chemical Mediators of Inflammation
Notice the reddish-brown haze caused by nitrogen oxides that is often over many major cities.
An emission tester that uses nitrogen to pressurize the fuel system.