The mass of oxygen that is required to react completely with 2 moles of CH4 is 128 grams
calculation
mass = moles xmolar mass
The molar mass of O2= 16 x2 = 32 g/mol
find the number of moles
first write the the equation for reaction
CH4 + 2O2 → CO2 + 2H2O
the mole ratio between CH4 to O2 is 1:2 therefore the moles of O2 = 2 x2 = 4 moles
mass is therefore = 32 g/mol x 4 moles = 128 grams
Answer : When a parallel circuit is built the voltage across each of the components remains the same, also the total current passed is the equal to sum of the currents passing through each components in the circuits.
When 2 or more components are tried to be connected in parallel they maintain the same potential difference (in voltage) across their ends of the circuit.
The potential differences across the components are the observed to be same in magnitude, and they have identical polarities between them.
Then, this same voltage is applicable to all circuit components connected in parallel.
So, if each bulb is wired to the battery in a separate loop, the bulbs will be in parallel series.
Answer:
E°= E°cathode- E° anode= 0.271-0.330= -0.59V
Explanation:
NB: the stoichiometry does not affect E°values,
And the more positive the E° values , the greater it's tendency to become spontaneous and hence irreversible, and the more negative the E° values the more likely to become less spontaneous and reversible, hence the above reaction is reversible
Answer:
When they like engage their students at a high level
Probably do some hands on experiments with their students so that the kids can actually have some fun.
When they know their students learning styles .
Explanation:
I don't know it just came to my mind. This is what I'd expect from a good science teacher.