Answer:
Acid - A compound that increases hydrogen ions (H+) when it is dissolved in a solution
pH - A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water
Base - A compound that increases hydroxide ions (OH−) when it is dissolved in a solution
Litmus paper - Used to measure the pH of substances by determining their hydrogen ion concentration
To answer this question, you need to know the concept of half-life, which is how a radioactive material decreases in mass over time.
The half life of U-235 is 703.8 million years. The first part of this problem is to find the scale factor. To do this, divide the time that has past by the half life, like this:

Now, take this scale factor and multiply it by the current mass, like this:

This number is what you add to the current mass to get the original mass. That is because the scale factor showed us that it was just over one half life. Since after one half life, the mass is cut in half, and this is over one half life, when we add to the original it will be a little over double. This equation illustrates the final addition:

I hope this helped you. Fell free to ask any further questions.
The answer is B. Because think about it, it’s not a scientific fact that brown dogs are better pets, and the best color for your room isn’t it because the answer would be an opinion of someone not a fact. I hope this might help you.
Answer:
U= 238g/mol
U2O5= 556g/mol
Explanation:
Since U= 238
O=16
U3O5= 2(238)+3(16)=556g/mol
<span>on plato it's 2,3–dimethylpentane
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