Use the periodic table to select which type of bond is present and which of the listed properties is most likely for each substance. A =
B =

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

What is the subscript for oxygen in its molecular formula

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)