Which theory was first proposed by albert einstein?

The correct answer will be- Theory of special relativity.

Explanation:

Albert Einstein was a well-known physicist who is known for his contributions to physics.

He was a theoretical physicist who determined in 1905 that for all non-accelerating observers in the universe the laws of physics are same. He proved this by showing that speed of light in a vacuum remains the same irrespective of the speed of the observer.

Thus, he published his results on this work in 1915 and named this interwoven space-time concept as the theory of relativity and is the correct answer.

Albert Einstein, in his theory of special relativity, determined that the laws of physics are the same for all non-accelerating observers, and he showed that the speed of light within a vacuum is the same no matter the speed at which an observer travels. As a result, he found that space and time were interwoven into a single continuum known as space-time. Events that occur at the same time for one observer could occur at different times for another.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

the answer is barium and copper bromide