Answer:
Isotopes are the atom of an element that have different numbers of neutrons but have a similar number of protons and electrons. The difference in the number of neutrons between the various isotopes means that various isotopes have different masses.
Explanation:
Octane on combustion yields CO₂ and H₂O;
2C₈H₁₈<span> + 2 5O</span>₂ → 16 CO₂<span> + 18 H</span>₂<span>O
</span>
According to equation,
2 moles Octane produces = 16 moles of CO₂
So,
498 moles Octane will produce = X moles of CO₂
Solving for X,
X = (498 mol × 16 mol) ÷ 2 mol
X = 3984 moles of CO₂
Now, Calculating for Volume,
As,
P V = n R T
Solving for V,
V = n R T / P ------- (1)
Pressure = P = 0.995 atm
<span>Volume = V = ? </span>
<span>Moles = n = 3984 </span>
<span>Gas Constant = R = 0.0821 L.atm.K</span>⁻¹.<span>mol</span>⁻¹<span> </span>
<span>Temperature = T = 23 + 273 = 296 K
</span>
Putting values in eq. 1
V = (3984 mol × 0.0821 L.atm.mol⁻¹.K⁻¹ × 296 K) ÷ 0.995 atm
Volume = 973040.95 L
This is a good riddle. The answer is ICE, because ice can break things, even ships like the titanic and it also makes steel weak but when the sun comes it melts away so it’s cowers away.
I believe the answer is gamma ray.
Answer:
Melting of ice
Explanation:
A physical change is one in which just the physical properties of the matter is altered. Most phase changes reaction falls under this type of change.
- Examples are boiling, melting, freezing, condensation, sublimation, magnetization of metals, breaking glass, cutting wood.
- No new kinds of matter is formed.
- The process is reversible
- No change in mass
