Which of the following is best described by the term macroscopic? A. Water in the liquid phase boils to become a gas.
B. Water molecules in the solid phase are tightly held together.
C. H2O
D. Water is composed of two hydrogen atoms and one oxygen atom.

The compound methyl butanoate smells like apples. its percent composition is 58.8% c, 9.9% h, and 31.4% o. what’s the empirical formula ?

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

Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?