A '5.0 L' tank of helium, which is kept at a pressure of h5.0 MPa (1 MPa or megapascal = 1000 kPa) in a room with a temperature of 22.0°C, is used to blow up
balloons. The balloons, when inflated, have a volume of 2.0 L and maintain a
pressure of 115 kPa without breaking. If the temperature remains constant, what
is the maximum number of balloons that can be filled with this tank?

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.

Identify a strong intermolecular force of attraction between an alcohol

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients