A compound is 40.0 % carbon, 6.66% hydrogen, and 53.3 % oxygen. The
sample is also found to have a molecular weight of 60 g/mol. What is the
molecular formula of this compound? *

C202H4

COH

C202H2

COH2

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.)

Element before carbon on the periodic table

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?