Answer:
The average rate is 2.84 X 10⁻³ Ms⁻¹
Explanation:
Average rate = -0.5*Δ[HBr]/Δt
given;
[HBr]₁ = 0.590 M
[HBr]₂ = 0.465 M
Δ[HBr] = [HBr]₂ - [HBr]₁ = 0.465 M - 0.590 M = -0.125 M
Δt Change in time = 22.0 s
Average rate = -0.5*Δ[HBr]/Δt
Average rate = - 0.5(-0.125)/22
Average rate = 0.00284 Ms⁻¹ = 2.84 X 10⁻³ Ms⁻¹
Therefore, the average rate is 2.84 X 10⁻³ Ms⁻¹
5. convection zone
6. 27 Million F
7. photosphere
8. 17 Million degrees
In these atoms, the positive and negative charges cancel each other out, leading to an atom with no net charge.
(Protons, neutrons, and electrons)
Answer:
An alternative to this could be 70 isopropyl alcohol. Potassium iodide is what is used to iodize salt, protect the thyroid gland from radioactive iodine, and via a pill taken by mouth treats low iodine levels (especially in the developing world). An alternative to this could be non-iodized salt.
Explanation:
Hope this helps.
Answer:- False.
Explanations:- One mole of any gas at STP occupies 1 volume of 22.4 L.
STP means standard temperature and pressure. Standard temperature is 273 K and standard pressure is 1 atm.
Here, in the statement the given temperature is 298 K which is not the standard temperature and so the volume of 1 mole of the gas will not be 22.4 L.
The volume could be calculated using ideal gas equation:
PV = nRT
R is the universal gas constant and it's value is .
let's plug in the values and calculate the volume for 1 mole of the gas:
V = 24.5 L
The volume for 1 mol of the gas at 298 K and 1 atm is 24.5 L and hence the statement is false.