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balandron [24]
3 years ago
9

A piece of granite is determined to contain 50 grams of U-238. After on half-life, how much material

Biology
2 answers:
zvonat [6]3 years ago
5 0

Answer: Hydrogen-3 or tritium as it is commonly called, has a half life of 12.32 years. If you start with 20 grams of it, how much will remain after 25 years? Ending Amount = Beginning Amount / 2 (time / half-life) Ending Amount = 20 / 2 (25 / 12.32) Ending Amount = 20 / 2 (2.0292) Ending Amount = 20 / 4.0818. Ending Amount = 4.8997 grams

Explanation:

MrMuchimi3 years ago
5 0

Answer:

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Explanation:the ont

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Read the questions below. Check all of the scientific questions.
irga5000 [103]

Answer:

The  following are examples of scientific questions

      How fast do cheetahs run?

      Does adding fertilizer to the soil help plants grow faster?

      What do pelicans eat?

      Why are my neighbors going to the mall?

Explanation:

An essential part of science is asking questions.  

A good scientific question is that it can be  answered by direct observations or with scientific tools.

      How fast do cheetahs run?

      Does adding fertilizer to the soil help plants grow faster?

      What do pelicans eat?

      Why are my neighbors going to the mall?

Examples of questions that are not scientific  are based on values or opinions like what people believe is right or wrong, or beautiful or ugly.

      Do fish like living in aquariums?

      Does my dog like her bone better than her Frisbee?

3 0
3 years ago
At the end of meiosis II, how does the DNA in each of the four new cells compare to the DNA from the original cell? A) half as m
Roman55 [17]

Answer:

A

Explanation:

Meiosis results in gametes with one half the number of chromosomes of the parent cell.

8 0
3 years ago
Read 2 more answers
The role of water in our body is to​
Soloha48 [4]

Answer:

correct

Explanation:

Water carries nutrients to all cells in our body and oxygen to our brain. Water allows the body to absorb and assimilate minerals, vitamins, amino acids, glucose and other substances. Water flushes out toxins and waste.

7 0
2 years ago
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3 criteria used to determine whether is REAL SCIENCE:
masha68 [24]

Answer:

3 criteria used to determine whether is REAL SCIENCE are temperature, precipitation and atmospheric pressure

Explanation:

Temperature forms the basis of a weather condition, it depicts the role of some other criteria, other factors are precipitation and atmospheric pressure

8 0
3 years ago
If the parents are AABBCC X aabbcc, what would represent the parental gametes? Select all that apply
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Take one gene at a time
B.ABC
A. abc
3 0
3 years ago
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