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sdas [7]
3 years ago
8

4. On the island of Hawaii, Keanu notices that the sand on the beach is black, the same color as the

Chemistry
1 answer:
Colt1911 [192]3 years ago
3 0

Answer:

The ricks were degraded over time by wind and water and were crushed down into tiny, smaller rocks, which is sand.

Explanation:

This is my first answer sorry im not that smart

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What is acid, base give examples?​
Alinara [238K]

Answer:

Common examples include hydrochloric acid, sulfuric acid, citric acid and ethanoic acid. Bases are a group of substances that neutralise acids. Soluble bases are called alkalis.

Explanation:

Hope this helps.

8 0
3 years ago
The image shows a representative sample of 50 atoms of a fictious element, called lemonium ( Le ). Lemonium consists of three is
Keith_Richards [23]

The percentage abundance is a measure of ratio of the number of each isotope and the total number of the element. The percentage abundance of each isotope is :

  • Le - 19 = 0.32
  • Le - 17 = 0.44
  • Le - 15 = 0.24

Number of each isotope in the sample :

  • Le - 19 = 16
  • Le - 17 = 22
  • Le - 15 = 12

Total number of sample = 50

The percentage natural abundance of the isotopes can be calculated :

Number of each isotope ÷ total number of sample

Percentage abundance of Le isotopes

  • Le - 19 = \frac{16}{50}=0.32
  • Le - 17 = \frac{22}{50}=0.44
  • Le - 15 = \frac{12}{50}=0.24

Therefore, the percentage abundance of Le - 19, Le - 17 and Le - 15 isotopes are 0.32, 0.44 and 0.24 respectively.

Learn more : brainly.com/question/16078327

3 0
3 years ago
I need help with this science!
Eddi Din [679]

Answer:

All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

3 0
2 years ago
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The radioactive isotope used in the dating of fossils thought to be less than 40,000 years old is ________________.
Fantom [35]

Answer:

The answer is Radiocarbon

8 0
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If you heat a substance does it move faster or slower? Explain in terms of energy.​
katrin [286]

Heating a substance will make the molecules move faster. It creates thermal energy

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