Question
What property does iron have that allows it to be removed with a magnet?
Answers
Answer
A scientist is working in a lab and accidentally combines two liquids that quickly form a solution. Which process could be used to separate the two liquids?(1 point)
Responses
passing the liquids through a filter to collect one of them
passing the liquids through a filter to collect one of them
waiting for the two liquids to separate
waiting for the two liquids to separate
heating the liquids and letting one boil away first
heating the liquids and letting one boil away first
collecting one of the liquids with a spoon
Responses
passing the liquids through a filter to collect one of them
passing the liquids through a filter to collect one of them
waiting for the two liquids to separate
waiting for the two liquids to separate
heating the liquids and letting one boil away first
heating the liquids and letting one boil away first
collecting one of the liquids with a spoon
Answer
Which of the following is between π
and 11−−√
?(1 point)
Responses
7–√
square root of 7 - no response given
8–√
square root of 8 - no response given
10−−√
square root of 10 - no response given
12−−√
and 11−−√
?(1 point)
Responses
7–√
square root of 7 - no response given
8–√
square root of 8 - no response given
10−−√
square root of 10 - no response given
12−−√
Answered by
GPT-4o mini
Iron is ferromagnetic, which means it has unique magnetic properties that allow it to be attracted to magnets. Ferromagnetic materials, like iron, have unpaired electrons in their atomic structure that can align their magnetic moments in the presence of an external magnetic field. This alignment causes iron to be attracted to magnets and allows it to be removed by them. Other ferromagnetic materials include cobalt and nickel, but iron is the most common and widely recognized for this property.
Answered by
GPT-4o mini
The most appropriate process to separate the two liquids that quickly form a solution would be **heating the liquids and letting one boil away first**. This method, known as distillation, takes advantage of the different boiling points of the liquids to separate them. The liquid with the lower boiling point will vaporize first and can be collected, leaving the other liquid behind. The other options would either not effectively separate the liquids or are not feasible processes for separating a solution.
Answered by
GPT-4o mini
To determine which of the given options is between \( \pi \) (approximately 3.14) and \( \sqrt{11} \) (approximately 3.32), we can evaluate the square roots of the numbers provided.
1. \( \sqrt{7} \approx 2.645 \)
2. \( \sqrt{8} \approx 2.828 \)
3. \( \sqrt{10} \approx 3.162 \)
4. \( \sqrt{12} \approx 3.464 \)
Now, comparing these values with \( \pi \) and \( \sqrt{11} \):
- \( \sqrt{7} \) is not between \( \pi \) and \( \sqrt{11} \).
- \( \sqrt{8} \) is not between \( \pi \) and \( \sqrt{11} \).
- \( \sqrt{10} \approx 3.162 \) is **between \( \pi \) and \( \sqrt{11} \)**.
- \( \sqrt{12} \) is greater than \( \sqrt{11} \).
Thus, the correct answer is \( \sqrt{10} \).
1. \( \sqrt{7} \approx 2.645 \)
2. \( \sqrt{8} \approx 2.828 \)
3. \( \sqrt{10} \approx 3.162 \)
4. \( \sqrt{12} \approx 3.464 \)
Now, comparing these values with \( \pi \) and \( \sqrt{11} \):
- \( \sqrt{7} \) is not between \( \pi \) and \( \sqrt{11} \).
- \( \sqrt{8} \) is not between \( \pi \) and \( \sqrt{11} \).
- \( \sqrt{10} \approx 3.162 \) is **between \( \pi \) and \( \sqrt{11} \)**.
- \( \sqrt{12} \) is greater than \( \sqrt{11} \).
Thus, the correct answer is \( \sqrt{10} \).
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