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Oksi-84 [34.3K]
3 years ago
5

What is the average atomic mass of hafnium?

Chemistry
1 answer:
Tasya [4]3 years ago
5 0
C) 179 amu. Hf or hafnium is an element having an atomic number of 72. It is a transition metal <span>with at least </span>34 isotopes, five of these stable isotopes have an atomic mass ranging from of 176 amu to 180 amu. Getting the average atomic mass requires knowledge on the % abundance of the stable isotopes, and then getting the weighted average. 
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Alpha helices are a type of secondary structure in proteins. What is the length of a 33.0 kDa single‑stranded α‑helical protein
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33.0 kDa ×(1000Da/kDa) × ( 1 residue/ 110 Da)

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Ammonium phosphate NH43PO4 is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric a
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<em />

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