For the first two
1. Will only give up one atom to be stable
2. Only 2 atoms
First of all write a balanced equation.
4Na + O2 -> 2Na2O
You are starting with a mass of sodium. You need to use sodium’s molar mass. Take this quantity times mole to mole ratio between sodium and sodium oxide to get moles of sodium oxide produced.
.141 moles of sodium oxide produced
Answer:
bromine will be replaced by fluorine.
Explanation:
lithium bromide LiBr2 is an ionic compoung splitting as Li2+ and Br-
therefore bromide ion is replaced by fluoride ion F-.
Answer:
A
Explanation:
Quaternary structure of proteins is composed of two or more polypeptide chains. Insulin has two; one alpha and one beta chain. The two chains are joined together by disulfide bonds at two points (at cysteines). Other examples of quaternary proteins structures are DNA polymerase and hemoglobin.
