An adult weighing 140 lb. is prescribed Tylenol (acetaminophen) at 0.016 g per kg of body weight. Calculate the number of moles of Tylenol that were prescribed.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

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.)

What causes the appearance of lines in a emission spectrum