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2 years ago

How has the study of fossil rocks evolved over time? (personal answer)

Chemistry

1 answer:

d1i1m1o1n [39]2 years ago

3 0

Answer:

When an organism dies, it is usually destroyed by other forms of life and by weathering processes. On rare occasions some body parts—particularly hard ones such as shells, teeth, or bones—are preserved by being buried in mud or protected in some other way from predators and weather. Eventually, they may become petrified and preserved indefinitely with the rocks in which they are embedded. Methods such as radiometric dating—measuring the amounts of natural radioactive atoms that remain in certain minerals to determine the elapsed time since they were constituted—make it possible to estimate the time period when the rocks, and the fossils associated with them.

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The bear population in a national forest was monitored for ten years. The collected data for two winter months can be seen in th

antoniya [11.8K]

Answer:

C. is the answer i did the test and it was right.

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3 years ago

What is the process of grouping similar things together

andre [41]

Answer:

See Explanation

Explanation:

Mathematically, this means to combine like terms, such as terms with the same variable. In chemistry, this can refer to polar objects combining with polar objects while nonpolar objects combine with nonpolar objects.

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3 years ago

A 7.00-mL portion of 8.00 M stock solution is to be diluted to 0.800 M. What will be the final volume after dilution? Enter your

amm1812

Explanation:

The number of moles of solute present in liter of solution is defined as molarity.

Mathematically, Molarity = $\frac{\text{no. of moles}}{\text{Volume in liter}}$

Also, when number of moles are equal in a solution then the formula will be as follows.

$M_{1} \times V_{1} = M_{2} \times V_{2}$

It is given that $M_{1}$ is 8.00 M, $V_{1}$ is 7.00 mL, and $M_{2}$ is 0.80 M.

Hence, calculate the value of $V_{2}$ using above formula as follows.

$M_{1} \times V_{1} = M_{2} \times V_{2}$

$8.00 M \times 7.00 mL = 0.80 M \times V_{2}$

$V_{2} = \frac{56 M. mL}{0.80 M}$

= 70 ml

Thus, we can conclude that the volume after dilution is 70 ml.

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3 years ago

They saw that the rock was deep purple. A quantitative B qualitative

Anika [276]

I think B qualitative is the answer

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3 years ago

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What happens when yeast is activated in two different ways?

skelet666 [1.2K]

Answer:

When the yeast get warm water and some food to eat (in the form of sugar), they will become active. And as they eat the sugar and break it down for food, they release carbon dioxide, which fills up the balloon. Yeast is actually a type of fungus related to mushrooms.

Hope it helps!!!

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3 years ago

Read 2 more answers