Answer:
The rate of reaction is - 2.868 * 10^-4 M/S
Explanation:
In the following reaction: 2 NO + O2 → 2NO2
NO will be consumed, when adding O2.
This means it will disappear. This is confirmed by the concentration at 5 seconds and 650 seconds.
A = -Δ[A] / ΔT = [A2] - [A1] / T2 - T1
(0.225 - 0.04) / (650 - 5) = 0.185 / 645 = 2.868 * 10^-4 M/S
Since it will disappear, this number will be negative : - 2.868 * 10^-4 M/S
The rate of reaction is - 2.868 * 10^-4 M/S
Answer:
Pulse
Explanation:
The sign that would make me call 911 is his pulse. If the child's pulse is unresponsive, then that would be a clear sign for me to call the paramedics.
Answer:
We can seperate a mixture by various methods
Explanation:
Distillation, Evaporation, filtration and chromatography
Answer:
an Additional shell
Explanation:
Potassium has an additional energy level when compared to sodium. This is due to an extra shell added. In the periodic table when you go down the group, the atomic radius increases due to increasing energy levels.
The atomic radius mean the distance from the center of the nucleus to the valance shell. it actually describes the size of the atom