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Georgia [21]
4 years ago
15

Alkali metals are found in many common substances but are rarely found in pure form. Explain why this is in the case

Chemistry
1 answer:
Evgesh-ka [11]4 years ago
6 0

Alkali metals are rarely found in pure form because they are so reactive.

Alkali metals are in Group 1 of the Periodic Table.

They need to lose only one valence electron to reach a filled valence shell

Thus, they readily react wirh water and other chemicals in the earth to form compounds.

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Explanation:

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4 0
3 years ago
A gram of gasoline produces 45 kJ of energy when burned. Gasoline has a density of 0.77 g/mL. How would you calculate the amount
BigorU [14]

The energy produced in the burning of gasoline = 45 kJ/g. So, amount of energy produced by burning 48 L gasoline = 45 kJ/g×36960 g = 1663200 kJ.

4 0
3 years ago
For a given mass of reactants, the energy released is greatest for a reaction involving
kari74 [83]

Answer: Option (D) is the correct answer.

Explanation:

In fusion reaction, two small nuclei combine together to result in the formation of a large nuclei.

Whereas in fission reaction, large nuclei dissociates into two or more small nuclei.

Nuclear fusion releases more energy as compared to nuclear fission.

For example, two hydrogen nuceli fuse together and result in the formation of helium atom along with release of energy.

    ^{2}_{1}H + ^{2}_{1}H \rightarrow ^{4}_{2}He + Energy

3 0
3 years ago
Read 2 more answers
A student picked up Ball A off a shelf and threw it. Which of the following would show be flow of cenergy from its source?
Alenkasestr [34]

Answer:

Yeah Bro, fs.

Explanation:

No explaining needed.

3 0
3 years ago
What does it mean when a reaction has a negative amount of Kj
makvit [3.9K]

Answer:

heat is released in going from reactants to products

Explanation:

hope this helps

3 0
3 years ago
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