I believe you mean KO2 reacting with H2O. The reaction is 4KO2+2H2O->4KOH +3O2. The mole ratio O2:KO2 is 3:4. Thus moles of O2 produced = 0.500/4*3 = 0.375 mol.
Response:
of 
can be found in 39.5 grams of .
Clarification:
Atomic weights: P= 31, F= 19,
The molar mass equals 1 atomic weight of P + 5 atomic weights of
F= 31+5 × 19
= 31+95
=126 g/mole
The number of moles in 39.5 gm of
equals 
= 
=0.3134 moles
1 mole of any substance encompasses
0.3131 moles comprises 0.3134
Thus, of can be found in 39.5 grams of .
Ca3(PO4)2 is the correct formula.
Answer: The correct option is, 30 protons
Explanation:
Element = Zinc
Atomic number = 30
Atomic mass number = 65
Recall that the atomic number equals the number of electrons and protons.
Atomic number = Number of electrons = Number of protons = 30
Number of neutrons = Atomic mass - Number of protons = 65 - 30 = 35
Therefore, an uncharged zinc atom has 30 protons.
Answer:
The force is 38503.5N.
Explanation:
From the problem, we determine:
P (pressure) = 5.00 atm.
Next, to find the force in Newtons (N), we must convert 5 atm into N/m², as shown:
1 atm equals 101325 N/m².
So, 5 atm equals 5 x 101325 = 506625 N/m².
A (the piston area) = 0.0760 m².
Pressure signifies force per unit area, mathematically represented as
P = F/A.
From this, we find F = P × A.
F = 506625 × 0.0760.
Therefore, F = 38503.5N.
Thus, the piston experiences a force of 38503.5N.
