The volume of the ideal gas in the container is 9 m3. What would the volume be if four more blocks were placed on top of the lid of the container with the temperature of the gas kept constant? (The lid itself has a mass equal to that of two blocks.)

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: