For chao who is working with milk, he should adjust the temperature of the milk to have a faster reaction. for ezra who is working with rock, she must increase the surface area of the rock to increase the reaction rate, this can be done by grinding. and for mia who is working with carbon dioxide gas, she should adjust the pressure
They can be like for conversion to renewable resources!
It is endothermic because heat energy is supplied to make the water of crystallization evaporate and make the compound anhydrous.
1) Convert 12.9 liters of Oxygen to mol at the given conditions:
PV = nRT ⇒ n = PV/RT
n = [1.2atm*12.9 l] / [0.082 atm l /K mol * 297K]
n = 0.636 mol of O2
2) use the stoichiometry derived from the balanced chemical equation
1mol C2H4 / 3 mol O2 = x mol C2H4 / 0.636 mol O2
x = 0.636 / 3 mol O2 = 0.212 mol O2.
Answer: 0.212 mol O2
1) Carbon-13:
Proton-6 Neutron-7 Electron-6
2)Atomic mass of element X:
(55*10+56*20+57*70)/100=56.6
