Answer:
C. the number of particles is the same as before.
Explanation:
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Answer:
0.111 mol
Explanation:
We can solve this problem by using<em> Avogadro's law</em>, which states that at constant pressure and temperature:
Where in this case:
We <u>input the data given by the problem</u>:
- 150.0 mL * n₂ = 50.0 mL * 0.332 mol
And <u>solve for n₂</u>:
Mass percentage is defined as the ratio of mass of the element to the total mass of the compound.
The formula of mass percentage is given by:
Mass percentage = (1)
mass of nitrogen = 56.00 grams
Let x be the total mass of the compound.
Put the given values in formula (1):
x=
x= 151.92 g
total mass of the compound = 151.92 g
To calculate the mass of oxygen in grams, subtract the mass of nitrogen from the total mass of the compound.
Mass of oxygen = 151.92 g - 56 .00 g = 95.92 g
Thus, mass of oxygen in grams = 95.92 grams.
The correct answer would be the second option. When the gibbs free energy of a system is negative and the electromotive force (EMF) of the system is positive then the reaction is to occur readily without any input of energy. With this, the reaction is said to be spontaneous. The higher the value of the EMF of a cell then it means the driving force for the reaction to occur is also high.