Why do fire accidents take place in mines? What are the diseases caused?

Chemistry

1 answer:

Lorico [155]3 years ago

7 0

Answer:

Mining accidents can occur from a variety of causes, including leaks of poisonous gases such as hydrogen sulfide or explosive natural gases, especially firedamp or methane, dust explosions, collapsing of mine stopes.Dust: Very fine mineral dust particles from blasting and drilling can accumulate in the lungs, causing a disease called pneumoconiosis. An irreversible, disabling form of this disease called silicosis can occur when a miner inhales excessive amounts of crystalline silica, or quartz

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A)The plates are all moving in the same direction

nevsk [136]

I believe the answer is C) there is an obvious reasoning for this all you have to do is eliminate answers that don't seem right for example, A)the plates are all moving the same direction every plate moves in different directions. B) The plates are all the same size. Well, it's really obvious that that is not true because every plate has its different shape and size. D) where two plates meet, they always move apart. If this were true, then we would never have earthquakes when plates meet earthquakes happen. so there for the answer is C)

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3 years ago

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Oduvanchick [21]

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3 years ago

Explain what makes one mineral so precious or costly compared to another.

ValentinkaMS [17]

There are multiple factors that contribute to the cost of a mineral. First of all is the demand or application, which will be related to its physical properties. For example, nontarnishing metals like gold are held in high value for their appearance. Second is the supply of the mineral, those that only have a small quantity in the earth's crust are likely to be more expensive. Third is the cost of extraction and manufacturing. Some minerals may be abundantly found, but may be distributed over a wide area, meaning that it is still expensive to mine and transport.

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3 years ago

Azithromycin suspension dosing is 10 mg/kg/d and is available in 200mg/5ml doses. how many ml would a 25kg child receive daily?

bekas [8.4K]

The answer to this question is 6.25ml

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Then multiply the doses with the available drug. It would be:
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4 years ago

How many grams of NaCL are required to prepare 50ml of a 2.0 molar solution

Ksivusya [100]

Answer:

5.85 gm.

Explanation:

We know that,

Normality = Molarity × Molecular weight

Equivalent weight

Since molecular weight of NaCl= equivalent weight = 23+35.5 =58.5

Normality of NaCl= molarity=2

Now,

Normality= weight in gram ×1000

Volume ×equivalent weight

Weight in gram is given by,

=Normality × Volume × equivalent weight

1000

= 2× 50 × 58.5

1000

=5.85 gm.

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4 years ago