An unknown gas effuses twice as fast as ch. what is the molar mass of the gas?



a. 64 g/mol

b.32 g/mol

c.8 g/mol

d. 4 g/mol

Which element is the least metallic between cadmium, silver, zinc, or iron?

According to le chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress. normalizes the stress. increases the stress. changes the stress.

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world