After dipping the litmus paper strips in the solutions, the answer to the question is that one is acidic because according to brad's observation on turned red and the others are basic or alkaline with the two papers turning blue.
Answer is: <span> 1.4 × 10-10 m
</span>pH = 9.85.
[H₃O⁺] = 10∧(-9.85).
[H₃O⁺] = 1.4·10⁻¹⁰ M.
pH (potential of
hydrogen) is a numeric scale used to specify the acidity or basicity <span>an aqueous solution.
</span>If pH is greater than
seven, solution is base and if pH is equal seven, solution is neutral and if pH of solution is less than seven, than is acidic.<span>
</span>
I believe a possible Lewis dot structure that does not obey the octet rule, where all elements are required to have 8 electrons in their outermost shell, would be the SF4 molecule.
Sulfur can contain an more than 8 electrons, in this molecule and thus has an expanded octet.
An ecosystem consist of living organisms and non- living organisms and how they interact among them.
Explanation:
a. Two biotic and two abiotic parts of the desert ecosystem are as follows sand as well as rocks are two abiotic parts and cactus as well as aloe plants are the two biotic parts of the desert ecosystem.
b. In an ecosystem a biotic and an abiotic component interact among each other , if we consider the interaction between a cactus and the sand we can see that as cactus has the ability to survive in a hot temperature the spines takes part in conserving water and the roots of the cactus go deep inside the soil.