Answer:
A. Their numbers of atoms
Explanation:
Answer:
Nitric acid is a strong acid meaning it completely dissociates in water. Therefore, you can say that the concentration of H+ ions in solution is the same as the concentration of the acid (molar concentration). So once you have that, you can use the pH formula to find the pH of the acid.
pH = -log[H+]
So if you have .15 M HNO3 the pH is 0.82.
But, if you have a different concentration, the pH will change.
Explanation:
It can be said that the measurements of the students are precise but not accurate.
<h3>What is accuracy and precision?</h3>
Accuracy is the degree of conformity of a measure to a true or standard value while precision is the ability of a measurement to be reproduced consistently.
Simply put, measurements are said to be accurate when they are close to a true or standard value but are said to be precise when they are close to one another.
According to this question, a student measures the mass of 40 mL of a liquid 3 times and obtained the following mass readings: 28.5g, 28.4g and 28.2g.
Based on the measurement, the measured data are precise because they are close to one another but are not accurate because they are not near the standard value of 37.9g.
Learn more about precision and accuracy at: brainly.com/question/15276983
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