The answer is 18.
This is obtained by multiplying the three oxygen atoms in NO₃, that are inside the parenthesis by the number two outside the parenthesis. The number 2 is there because it comes from associating with Fe ²⁺ .
3×2=6 oxygen atoms present in the formula.
Then multiplied by the 3 that's in front of the formula (that indicates how many molecules).
6 x 3= 18
Answer: option B. - A, B, D, E, C, H, F, G is correct using the principle of cross-cutting relationships.
The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through.
Explanation:
The full sequence of events is:
1. Layer A formed.
2. Layer B formed
3. Layer D formed.
4. Layer E formed
5. After layers A-B-D-E were present, intrusion C cut across all three.
6. Fault H formed, shifting rocks E through A and intrusion C.
7. Weathering and erosion created a layer of soil on top of layer F then G.
The correct answer should be
<span>At dynamic equilibrium, the rates of forward and reverse reactions are equal.
The chemicals keep exchanging but the rates are the same which means that the chemicals move at an equal rate.</span>
Bleach and anytype of cleaner like window cleaner or disinfectant is very dangerous because if you mix those two together it might cause a very deadly fume and can cause lung failure and death within about 5 hours