What is the oxidation number is s in li2so4

Select the best answer for the question. 1. The two proposed plans for the Constitution agreed on A. having three branches of government. B. having one president. C. having two houses of Congress. D. an elected judiciary.

The reaction pcl3 (g) + cl2 (g) ←-→pcl5 (g) has kp=0.0870 at 300 ∘c. a flask is charged with 0.50atmpcl3, 0.50atmcl2, and 0.20atmpcl5 at this temperature.

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 19.2 g of carbon were burned in the presence of 68.9 g of oxygen, 17.7 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

How do chemists envision reactions taking place in term of the collision model for reaction?

If a gas occupies a volume of 0.25 L at - 2.3°C, by what amount would the volume increase if the gas were heated to 82°C at constant pressure? Could somebody include the whole process? I'm really confused

How many moles of al2o3 are formed when 0.78 mol o2 reacts with aluminum?

The dissociation of a weak electrolyte is suppressed when

There are seven major levels of classification. Kingdom and Phylum are just two of the levels. Which of the following are also major levels of classification? Choose all answers that are correct. A. Class B. Order C. Family D. Level

An experiment with high validity is

What is the smallest part of a tree that can do all the things needed for life?