Two radioactive nuclides decay by successive first-order processes: (the quantities over the arrows are the half-lives in days). suppose that y is an isotope that is required for medical applications. at what time after x is first formed will y be most abundant?

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11

The biosphere of the earth is made up of what compound? organic or inorganic?