Answer:
C: It is the difference between the total kinetic and potential energy in a system
Explanation:
Potential energy is stored energy while kinetic energy is the energy of motion.... This is not the same as the object's total energy, which would be the sum of all forms of its energy, including thermal, chemical and so on. The type of potential energy stored in molecular bonds is a form of energy called chemical energy.
Hope this helps
Answer:
Atoms of Zn (s) lose electrons and are oxidized. Atoms of Zn (s) lose electrons and are reduced. There is a net loss of mass. There is a net gain of mass.
Explanation:
Answer:
The equilibrium shifts towards reagents
Explanation:
Is known ![Kc=\frac{[products]}{[reagents]}](https://tex.z-dn.net/?f=Kc%3D%5Cfrac%7B%5Bproducts%5D%7D%7B%5Breagents%5D%7D)
rised to the power of their number of moles in the balanced reaction. When you have a system at equilibrium with Kc < 1, it means [products] < [reagents] and the system needs energy to react, so if you decrease tempeture the equilibrium shifts towards reagents and less products will be created.
This efect can be discribed with Van´t Hoff equation: 
where we can see that if we decrease temperature (this is T2<T1) in consecuense K2<K1 and reaction doesn´t happen.
Explanation:
divide the objects weight by the acceleration of gravity to find the mass
First you need to find out the Limiting reactant (LR). convert both reactants to the same thing. Check that the chemical equation is balanced. Now use stoichiometr and remember at moles, multiply: need moles, divide2 g / 42g/mol= 0.0477 mol propane mass propane/ Molar Mass propane = moles propane4 g / 32 g/mol= 0.125 mol oxygen X (1 mol/ 5 mol) = 0.025 mol propane oxygen is the LRmass O2 / MM O2 X (mol propane / mol O2)0.025 mol X (3 mol / 1 mol ) = .075 mol CO20.075 mol X (12 + 2*16) g /mol = 3.6 g CO2 In one step:2 g / 42g/mol X (3 mol / 1 mol ) X 48 g/mol = 6.86 g CO24 g / 32 g/mol X (3 mol / 5 mol ) X 48 g/mol = 3.6 g CO2mass/ MM X coefficient ratio X MM (new)
