Answer:

Explanation:
Hello,
In this case, considering the required product which is dinitrogen tetroxide whose molecular formula is N₂O₄, by considering its formation reaction which is starting by both gaseous nitrogen and oxygen as shown below:

Nevertheless, it should be balance since four oxygen atoms are present at the right side, thus, we obtain:

Best regards.
Answer:
Equal to 0.253 mol.
Explanation:
Hello,
In this case, since hydrogen and water are in a 2:2 molar relationship, the number of moles of hydrogen necessary to produce 0.253 mol of water will be also 0.253 mol as shown on the following stoichiometric factor:

Therefore, The number of moles of hydrogen that is needed to produce 0.253 mol of water is equal to 0.253 mol.
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Answer:
I got .146 g of water
Explanation:
Refer to this equation:
Q= mcΔt
Q= .545 J
c= 4.186 J/g
Δt= .892
plug in values:
.545 J = m(4.186 J/g)(.892°C)
simplify:
.545 J = m(3.734 J/g°C)
.146 g
Answer:
A. Atomic Number
Explanation:
The mass number is used to calculate the number of neutrons & electrons in one atom of an element. In order to calculate the number of neutrons you must subtract the atomic number from the atomic mass.
Answer:
an earthquake
Explanation:
the tectonic plates rub together sending shockwaves