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Hitman42 [59]
3 years ago
14

Corundum is a mineral with a hardness of 9 on the Mohs hardness scale. For which application would corundum

Geography
2 answers:
charle [14.2K]3 years ago
6 0

Answer:

Your answer is B

Explanation:

Hope this helps!!

sukhopar [10]3 years ago
5 0

Answer:

Grinding Glass Is your answer!

Explanation:

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What explains the rise of megacities in cities across Latin America?
Eva8 [605]

Answer:

latin america is a great vacation spot for tourism

Explanation:

3

3 0
2 years ago
Which BEST explains the effect the collapse of the Soviet Union had on Eastern Europe?
forsale [732]

Answer:

A. Democracy spread throughout the region

Explanation:

After the collapse of the Soviet Union, Eastern Europe had slowly integrated a democratic government. This however does not mean it was perfect, most of them are corrupted but even Russia had declared itself a Republic after the end of the Communist Regime.

3 0
2 years ago
The himalayan mountain range was formed at which tectonic setting? question 21 options: convergent plate boundary a hotspot tran
natita [175]

Answer:

convergent plate boundary

Explanation:

Typically, a convergent plate boundary—such as the one between the Indian Plate and the Eurasian Plate forms towering mountain ranges, like the Himalaya, as Earth's crust is crumpled and pushed upward.

4 0
2 years ago
Need help asap!
slava [35]

More than 75 percent

Explanation:

Let us carefully analyze this problem:

The half life of the rubidium isotope = 50 billion years

   The half-life of a radioactive isotope is the time it takes for it to decay to half of its original amount.

  Every 50years, we know that a rubidium isotope would split into half.

Initially when the isotope was formed, we would only have the parent atoms there. There wont be any daughter;

  ratio of parent to daughter = 100 : 0

When the isotope decays to half; we would have equal number of parent and daughter:

  ratio of parent to daughter at half life = 50 : 50

The age of the earth is about 4.6billion years;

this is;

          \frac{4.6}{50} x 100 = 9.2% of the half-life of the rubidium isotope.

At this time, we should know that only 9.2 percent of the daughter would have been formed.

The remaining parent would be 100 - 9.2 = 90.8% would still be left undecayed.

The ratio of parent to daughter  = 90.8 : 9.2

This is more than 75% of the parent

learn more

Radioactive decay brainly.com/question/10125168

#learnwithBrainly

4 0
3 years ago
3
Basile [38]

Answer:

Astatine and chlorine are halogens only

Nitrogen and sulphur are non metals only

Krypton (Kr) is noble gas only

8 0
3 years ago
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