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3 years ago

8

Scientists excavating at the bottom of the ocean come across fossilized remains of an ancestor of a mountain goat. How can this

be explained?

1 answer:

galina1969 [7]3 years ago

4 0

There was land on that surface before there was water

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Hydrogen gas has a density of 0.090 g/L, and at normal pressure and -1.72 C one mole of it takes up 22.4 L. How would you calcul

BlackZzzverrR [31]

Answer:

$n= \frac{m}{ \rho }* \frac{1 mol}{22.4 L}$

Explanation:

Assuming that all caculations are at normal pressure and -1.72°C :

$n= \frac{m}{ \rho }* \frac{1 mol}{22.4 L}$

Where

$n$ is the number of moles of hydrogen

$n$ is the mass of hydrogen

$\rho$ is the density of hydrogen

6 0

3 years ago

Read 2 more answers

I need help ASAP 10 points

jekas [21]

Answer:

the sun beams down on the pool and heats it up top to bottom the deeper the colder

4 0

3 years ago

The _____________ have a single electron in the highest occupied energy level.

IRISSAK [1]

In order to help the student expand his/her knowledge I will help answer the question. This in hope that the student will get a piece of knowledge that will help him/her through his/her homework or future tests. The ________ have a single electron in the highest occupied energy level. The missing word to complete this statement and make it true is Alkali Metals.
<span>
I hope it helps, Regards.</span>

5 0

3 years ago

A motorcycle traveling at 19 m/s starts to slow down steadily, then it stops completely in 10 seconds. What is the motorcycle ac

Dmitry [639]

Answer:

-1,9m/ $s^{2}$

Explanatio:

$a=\frac{v-v_{0} }{t}$

= $\frac{0-19}{10}$ =-1,9m/ $s^{2}$

3 0

2 years ago

using information about natural laws explain why some car crashes produce minor injuries and others produce catastrophic injurie

Roman55 [17]

My main reason would be momentum – it depends on the mass as well as the speed of the colliding objects. For example if two sedans travelling in a low speed bump each other, then probably the damage would be minimal scratches. However, if a high speed car crashes unto a heavy truck also travelling fast, then the result would be catastrophic.

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3 years ago