Which one is not required for reaction of nitrogen with hydrogen to form ammonia gas?

1. uv light 2. high pressure

3. high temperature 4. iron catalyst

What is the percent yield for the reaction pcl3 (g) + cl2 (g) ? pcl5 (g) if 119.3 g of pcl5 (? = 208.2 g/mol) are formed when 61.3 g of cl2 (? = 70.91 g/mol) react with excess pcl3? a 66.3%?

Which of the following is the Arrhenius definition of an acid? a. a substance that donates a hydrogen ion to another substance during a reaction b. a substance that increases the concentration of hydronium ions when dissolved in water c.

Which compound will most likely dissocate when dissolved in water select all that apply

A sample of argon has a volume of 1.2 L at STP. If the temperature is increased to 22°C and the pressure is lowered to 0.80 atm, what will the new volume be, in L?

How many moles of sulfur dioxide are in 2.26x10^33 sulfur dioxide molecules?

What is the ratio of carbon, hydrogen, and oxygen in most carbohydrates?

Radium-223 is a radioactive isotope with a half-life of 11.4 days. how long (in days) will it be before 87.5% of the sample has decayed?

Which kind of reaction is shown below? 2H2O2 → 2H2O + O2

Phosphorus has the molecular formula p4, and sulfur has the molecular formula s8. how many grams of phosphorus contain the same number of molecules as 7.88 g of sulfur?

Latitude is the only factor that determines the temperature of a region true or false?