A molecule or ion that donates the hydrogen in a hydrogen bond is a hydrogen bond donor A molecule or ion that binds to this hydrogen is a hydrogen bond acceptor. Specify the hydrogen bonding behavior of the 4 species below by selecting: donor for species that act as donors only acceptor for species that act as acceptors only both for species that act as both donors and acceptors neither for species that act neither as donors nor as acceptors. Hydrogen bonding behavior acceptor Hydrogen bonding behavior neither Hydrogen bonding behavior Hydrogen bonding behavior

Hydrogen bonding behavior donor.

Hydrogen bonding behavior as both donor and acceptor.

Explanation:

In a chemical bond, hydrogen is also known as proton because it is made up of only one electron and one proton. Hydrogen bonding refers to the bonding of hydrogen atom with more electronegative atoms during covalent bond. In this bonding, only sharing of electron occurs because hydrogen atom has only one electron. During hydrogen bonding, one atom act as a donor such as hydrogen atom while other act as acceptor such as oxygen in a molecule of water.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"