<span>
There seem to be 3 major discoveries about particles that year. The first is neutrino oscillation is </span>demonstrated. Next, supernovae observations suggest that the expansion of the universe is accelerating. Time reversal asymmetry is observed for K meson decay
Answer:
And=B
Explanation:
The subscripts does represent the relative mass of each type of atom in the compound, it represents relative number of atoms
Answer:
Explanation:
The formula for the heat absorbed is
q = mCΔT
Trial 1
m = 30.0 g
ΔT = 40.0 – 0 = 40.0 °C
q₁ = 30.0 × 4.184 × 40.0 = 5020 J
Trial 2
m = 40.0 g
ΔT = 40.0 – 30.0 = 10.0 °C
q₂ = 40.0 × 4.184 × 10.0 = 1670 J
q₁ - q₂ = 5020 – 1670 = 3350 J
<u>Answer:</u>
<em>54.9 mg of the radioisotope are still active after 110 min.</em>
<u>Explanation:</u>
Half-life of F-18 is found to be 109.7 minutes
Rate constant
t = time taken = 110 minutes
[A] is the final quantity
is the initial quantity
Plugging the values and solving for [A]
[A] = 54.9 mg is the Answer