An atom has the following three isotopes: 24 amu (percent abundance 78.99%), 25 amu (percent abundance = 10.00%), and 26 amu (percent
abundance = 11.01%). Calculate the average atomic mass. What is the
identity of this atom based on your calculation?

Is this a single replacement reaction or there is no

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.