Suppose that you measure a pen to be 11.1 cm long. Convert this to meters.

0.111 m

Explanation:

Step 1: Given data

Length of the pen: 11.1 cm

Step 2: Convert the length of the pen to meters

In order to convert one unit into another, we need a conversion factor. In this case, we will use the conversion factor 1 meter = 100 cm. The length of the pen in meters is:

11.1 cm × (1 m/100 cm) = 0.111 m

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

the answer is b & c i believe : )