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3 years ago

Which material cannot be made into a magnet ?

Chemistry

2 answers:

bogdanovich [222]3 years ago

7 0

<span>Its b.aluminum

I hope this helps and sorry if I am wrong </span>

solong [7]3 years ago

6 0

Answer:

B. aluminum

Explanation:

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Which of the following correctly identifies who is credited with key developments of the cell theory?

vampirchik [111]

Answer:

Matthias Schleiden, Theodor Schwann, and Rudolf Virchow

Explanation:

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3 years ago

What happened to a balloon when it is put in freezer

e-lub [12.9K]

The frozen balloon shrank because the average kinetic energy of the gas molecules in a balloon decreases when the temperature decreases. This makes the molecules move more slowly and have less frequent and weaker collisions with the inside wall of the balloon, which causes the balloon to shrink a little.

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3 years ago

Based on the reactivities of the elements involved, which reaction will form products that are more stable than the reactants?

LUCKY_DIMON [66]

Answer: The correct option is B.

Explanation: All the given reactions are a type of single displacement reactions.

Single displacement reactions are defined as the reactions in which a more reactive metal displaces a less reactive metal in a chemical reaction.

General equation for these reactions is:

$AB+C\rightarrow CB+A$

For the given reactions, we will use the reactivity series. The metal which lies above in the reactivity series will easily displace the metal which lies below in the reactivity series.

Option A: For this reaction, zinc lies below aluminium in the reactivity series. Hence, zinc will not be able to displace aluminium in the chemical reaction.

Option B: For this reaction, Sodium is more reactive than calcium as it lies above in the reactivity series. Hence, sodium will easily displace calcium in the given chemical reaction.

Reaction follows:

$CaBr_2+2Na\rightarrow 2NaBr+Ca$

Option C: For this reaction, hydrogen lies below magnesium in the reactivity series. Hence, hydrogen will not be able to displace magnesium in the chemical reaction.

Option D: For this reaction, Calcium lies below barium in the reactivity series. Hence, calcium will not be able to displace barium in the chemical reaction.

Option E: For this reaction, barium lies below lithium in the reactivity series. Hence, barium will not be able to displace lithium in the chemical reaction.

Reactivity series is attached below.

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4 years ago

Read 2 more answers

What statement is true about the eight elements on the periodic table termed metalloids?

valina [46]

Answer:

They have properties of both metals and nonmetals

Explanation:

Elements in the periodic table may be divided into Metals, non-metals, and metalloids.
Metals are the elements that react by losing electrons to form stable positively charged ions known as cations. Examples are group 1, 2, and 3 elements together with transition elements.
Non-metals are those elements that react by gaining electrons to form stable negatively charged ions called anions. Examples include oxygen, carbon, sulfur, etc.
Metalloids, on the other hand, are elements that have both metallic and non-metallic properties.
Metalloids occur between metals and non-metals in the periodic table. Examples include Boron and silicon among others.

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3 years ago

The following dipeptide is Asp-Tyr. Indicate the charge state for each structure at the given pH by adding the or – charges to t

AnnZ [28]

Here is the answer. I am not sure how to explain it! Sorry!

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3 years ago