Answer:
22.4 litres
Step-by-step explanation:
Reaction:
2Mg (s) + O2 (g) → 2 MgO (s)
From the reaction, we know that 2 moles of Mg (s) react with 1 mol of O2
STP conditions mean:
- absolute temperature of 273.15 K
- absolute pressure of 1 atm
Using the equation of state for ideal gases:
PV = nRT
where P is the absolute pressure, T is the absolute temperature, n are the moles, V is the volume, and R is the gas constant = 0.082 atm*L/(mol*K). Solving for V and replacing:
V = nRT/P
V = 1*0.082*273.15/1
V = 22.4 litres
Answer:
Option 2 - 
Step-by-step explanation:
Given : Equation 
To find : What is the solution of the equation ?
Solution :
Using substitution method,
Let y=x-5
Using quadratic formula, 
Here, a=1, b=3 and c=9
Substitute back,
Therefore, option 2 is correct.
Left over is 456 minus total of A+B+C
456-334=122
C d are equal so 122/2=61
The picture will now be 7.5 inches high by 18 inches wide.
