Answer:
Krypton is a noble gas, so it was difficult for chemists to find it, as though it was a secret.
Explanation:
Krypton (₃₆Kr), an element with atomic number 36, belongs to group 18 on the periodic table of elements. This group is a specific one - it's made up of elements known as noble gases. Besides krypton, these elements are: helium, neon, argon, xenon, and radon. All noble gases were characterized relatively late compared to other elements. They all conduct electricity, fluoresce, and are odorless and colorless. Besides that, they have very low chemical reactivity. Because of their stability, they are often used to maintain a safe, constant environment. As krypton shares all of these characteristics, it was difficult for chemists to find it. That's why it was most likely given that name.
The product of expressions or numbers is calculated by multiplying the expressions or numbers.
- The incorrect value in the table is
- The value that should have been written is
From the table (see attachment), the incorrect product is given as:
The above product is incorrect.
This is so because when -y is multiplied by 2x, the result is
So, the correct expression is:
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Answer:
For close to 50 years, educators and politicians from classrooms to the Oval Office have stressed the importance of graduating students who are skilled critical thinkers.
Content that once had to be drilled into students’ heads is now just a phone swipe away, but the ability to make sense of that information requires thinking critically about it. Similarly, our democracy is today imperiled not by lack of access to data and opinions about the most important issues of the day, but rather by our inability to sort the true from the fake (or hopelessly biased).
We have certainly made progress in critical-thinking education over the last five decades. Courses dedicated to the subject can be found in the catalogs of many colleges and universities, while the latest generation of K-12 academic standards emphasize not just content but also the skills necessary to think critically about content taught in English, math, science and social studies classes.
Explanation:
Answer:
Drugs whether it's medication or for your own use, it can be become dangerous. It can affect the way your body and mind function; changing how you feel, think and behave. It can become a huge social problem because people mostly think it only affects the person using it. However, that's not the case. It can create a domino effect on the lives of those around the user. It is a social problem that normalizes drug use and affects individuals and their families.
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