Select the sequence of events for the olfactory pathway 1. a second messenger opens cation channels (Na and Ca 2)
2. depolarization of olfactory receptor cells occurs
3. odorant binds to olfactory receptor protein
4. G protein activates cyclic adenosine monophosphate

"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"

if you mean hydrogen and oxygen then water is the product

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.