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Oksana_A [137]
3 years ago
15

Someone please help me answer this.

Chemistry
1 answer:
pantera1 [17]3 years ago
7 0
Cloudy skies and precipitation. Rain is normally caused by water vapor within the condensation of the low pressure system.
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Read the following sentences: “This substance on copper is green. It is called verdigris. Paola said, ‘In Spanish, the word for
Pachacha [2.7K]

Answer:

See below.

Step-by-step explanation:

The author is probably reminding us that knowing the origins of words helps us to remember what they mean.

If "verde" means "green", the "verd" in "verdigris" probably means that verdigris is green.

However, the "verd" in verdigris domes from other languages.

It was originally Latin "viride aeris" (green brass).

In old French it became "verte de Grèce" (green of Greece). The modern French spelling is "vert-de-gris" (green of grey).

The English word "verdigris" comes from the French words.

4 0
3 years ago
What happens to metal railroad tracks during the heat of a summer day?
k0ka [10]
The rails expand during the heat of a summer day
7 0
3 years ago
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Explain why space junk is a hazard to an astronats or spacecraft
Pie

Answer:

Space junk is travelling so fast that a collision with an astronaut or a spacecraft could be disastrous.

Explanation:

Space junk orbits the Earth at speeds of about 28 000 km/h.  

That's so fast that even an orbiting fleck of paint has enough kinetic energy to cause impact craters on the surface of a spacecraft. They are even more dangerous to an astronaut on a space walk.

Much of the space debris is larger and more dangerous than a fleck of paint.

One rough estimate of the amount of space debris is

<em>       </em><u>Size</u><em>        </em>        <u>Number of objects</u>

< 1 cm                        200 000 000

1 cm to 10 cm                   700 000

> 10 cm                                 30 000

Satellites, etc.                       18 000

The chances of collision are small, but any collision can be disastrous.

3 0
3 years ago
What is the daughter nucleus of pt-199 after a beta decay?
Setler79 [48]

B. At-200

In beta decay the atomic number increases by 1

6 0
2 years ago
Choose the correct name for each acid. Click here
Zigmanuir [339]

Answer:

1. Nitrous Acid

2. Hydroiodic Acid

3. Phosphoric Acid

Explanation:

Just did the lesson

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3 years ago
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