What is the molecular formula of a compound that has a molecular mass of 54 and the empirical formula c2h3?
a. c2h3
b. c4h6
c. c6h9
d. c8h12

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action