When you’re substance either starts to smell, smoke, explode, change color. Any of those happening are proof of a chemical reaction.
<u>Answer:</u> The final volume will be 16.85 mL
<u>Explanation:</u>
To calculate the new pressure, we use the equation given by Boyle's law. This law states that pressure is inversely proportional to the volume of the gas at constant temperature.
The equation given by this law is:
where,
are initial pressure and volume.
are final pressure and volume.
We are given:
Conversion factor: 1 atm = 760 torr
Putting values in above equation, we get:
Hence, the final volume will be 16.85 mL
Answer:
0.010g of C-14 would be later after 50,000 years
Explanation:
The kinetics of radioactive decay follows the equation:
Ln (N / N₀) = -kt
<em>Where N could be taken as mass after time t, </em>
<em>N₀ initial mass = 4.30g;</em>
k is rate constant = ln 2 / t(1/2)
<em>= ln 2 / 5730years = 1.2097x10⁻⁴ years ⁻¹</em>
<em />
Replacing:
Ln (N / 4.30g) = -1.2097x10⁻⁴ years ⁻¹ * 50000 years
N / 4.30 = 2.36x10⁻³
N =
<h3>0.010g of C-14 would be later after 50,000 years</h3>
The Answer is D cause of the people going back and forth.
Net ionic equation:
C₁₈H₂₁O₃N(aq) + H₂O(l) ⇄ C₁₈H₂₁O₃NH⁺(aq) + OH⁻(aq).
According to Bronsted-Lowry theory acid are donor of protons and bases are acceptors of protons (the hydrogen cation or H⁺).
Codeine (C₁₈H₂₁O₃N) is Bronsted base and it can accept proton and become conjugate acid (C₁₈H₂₁O₃NH⁺).
pKb for codeine is 5.8.
