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andrew11 [14]
3 years ago
9

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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In yeast, ethanol is produced from glucose under anaerobic conditions. A cell‑free yeast extract is placed in a solution that co
nadezda [96]

Answer:

0.35 milli moles of ethanol can be theoretically be produced under these conditions.

Explanation:

C_6H_{12}O_6 + 2 ADP + 2 Pi\rightarrow 2 C_2H_5OH + 2 ATP + 2 CO_2

Moles of glucose = 3.50\times 10^2 milli mole

Moles of ADP = 0.35 milli mole

Moles of Pi = 0.35 milli mole

Moles of ATP = 0.70 milli mole

As we can see that ADP and Pi are in limiting amount which means tat they are limiting reagent. So, the moles of ethanol produced will depend upon the moles of ADP and Pi.

According to reaction, 2 moles of ADP gives 2 moles of glucose.

Then 0.35 milli moles of ADp will give :

\frac{2}{2}\times 0.35 mmol=0.35 mmol of ethanol

0.35 milli moles of ethanol can be theoretically be produced under these conditions.

5 0
4 years ago
What is ozone ? A) dissolved oxygen B) the main catalyst in photosynthesis C) a type of oxygen D) a form of calcium carbonate
kykrilka [37]

Answer:

C)

Explanation:

ozone is a type of oxygen. It's chemical compound is 03. Just 1 more molecule than regualr oxygen.

Glad I was able to help!!

7 0
3 years ago
Read 2 more answers
Calculate the molar mass of Li2SO4.
asambeis [7]

Answer:

109.94 g/mol

Explanation:

Li is 6.94 and there's 2 of those = 13.88

1 S = 32.06

4 O = 63.996

Add all of those together to get 109.936 round to 109.94

3 0
3 years ago
How are earthquakes and tsunamis created?
frez [133]

Earthquakes are created when tectonic plates rub, push, or pass each other. Tsunamis are made by earthquakes on the sea floor.

8 0
4 years ago
A certain alcohol contains only three elements, carbon, hydrogen, and oxygen. Combustion of a 20.00 gram sample of the alcohol p
bagirrra123 [75]

The empirical formula is C₂H₆O.

We must calculate the <em>masses of C, H, and O</em> from the masses given.

<em>Mass of C</em> =38.20 g CO₂ × (12.01 g C/44.01 g CO₂) = 10.424 g C

<em>Mass of H</em> = 23.48 g H₂O × (2.016 g H/18.02 g H₂O) = 2.6268 g H

<em>Mass of O</em> = Mass of compound - Mass of C - Mass of H

= (20.00 – 10.424 – 2.6268) g = 6.9487 g

Now, we must <em>convert these masses to moles</em> and <em>find their ratios</em>.

From here on, I like to summarize the calculations in a table.

<u>Element</u>  <u>Mass/g</u>    <u>Moles</u>    <u>Ratio</u>  <u>Integers</u>  

     C        10.424    0.8680  1.999        2

     H         2.6268  2.606    6.001        6

     O        6.9487  0.4343    1                1

The empirical formula is C₂H₆O.

7 0
3 years ago
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