Given the law of conservation of energy, what happens when a 200°c iron bar is placed in thermal contact with a 30'c block of wood?
o a
energy leaves the iron bar and enters the wood until the temperatures are equal
ob.
oc.
energy leaves the wood and enters the iron bar until the temperatures are equal.
all the energy from the iron bar is transferred to the wood.
od.
all the energy from the wood is transferred to the iron bar.

there are no statements provided but here is why:

sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

hope this

"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"

2b2t

explanation:

2b2t