They contain metals with the acception of Hydrogen (nonmetal)
Oxidation is a process when an atom, a group of atoms, or an ion loses electrons.
For example,
Cu⁰ -------> Cu⁺² + 2e⁻. This is an oxidation process.
As we can see an oxidation number was 0, and it became +2. The oxidation number is increased. Oxidation number of the atom, when an atom has undergone oxidation, increases.
So, answer is b.False.
Well first I would grab a cylinder and pour water about half way and Than i would use the balloon to represent the stomach , i will fill the balloon up with alcohol mixed with water to represent the stomach's acid . Use the mass balance to check the weight of the stomach and how much (food) the person has ate , i could also do this by use the cylinder to check volume without removing any of its props. with one rubber band i would open the the balloon and fold it back on the edge of the cylinder while the alcohol is in it, so you will see water at the bottom than the balloon filled with alcohol over it, when i'm done i will grab the stop watch to time whats about to happen . pickup the 3(100cm*3) conical flasks for a base .
than drop the 3 investigation tablets into the "stomach" balloon start the watch and see what happens.
i hope that this helps. : )
Van der Waals equation is as follows:
(P + a(n/V)²) * (V -nb) = n RT
Moles of H₂ is calculated by dividing 25 g by 2 (molecular weight of H₂) = 12.5 moles
Values of a and b are:
a = 0.02444 atm L² / mol
b = 0.0266 L / mol
(P + 0.02444 (12.5/1)²) * (1 -(12.5 *0.0266)) = 12.5 * 0.0821 * 293 K
If we solve this equation we get pressure of 412.29 atm
With ideal gas equation we get:
P V = n R T
P = n * R * T / V = (12.5 * 0.0821 * 293 / 1) = 300.69 atm