2. a. i. Iron reacts with H2SO4 according to the equation: Fe(s) + H2SO4(aq) - → FeSO4(aq) + H2(g). Calculate the mass of FeSO4 that would be produced by 0.5mole of Fe. ii. Calculate the volume of CO2 produced when 5.8g of Na2CO3 reacted with excess HNO3 Na2CO3(s) + 2HNO3(aq) 2NaNO3(aq) + CO2(g) +H20(l)

"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"

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

it is the most commonly accepted one