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Elena-2011 [213]
2 years ago
12

HELP PLS.. I’LL MARK U BRAINLIEST!

Chemistry
1 answer:
lakkis [162]2 years ago
3 0

Old and inefficient mining smokestacks contaminate the soil around abandoned mine sites.

<h3>What are mines?</h3>

A mine is an area from which natural resources are extracted such as coal, metals, etc. A mine is known to be the source of many heavy metals as well as acid.

As such the statement that does not represent the impact of mining services is that; "Old and inefficient mining smokestacks contaminate the soil around abandoned mine sites".

Learn more about mine sites:brainly.com/question/25875677

#SPJ1

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What does a mole of iron weigh
r-ruslan [8.4K]

As the atomic mass of iron is 55.847u

We say that it is the mass of one mole of iron.

By formula it can be find by

No.of mole=mass in g/molar mass

Mass in gram = no.of mole x molar mass

No.of mole =1

Molar mass = 55.847g

Mass in gram = 1x55.847

= 55.847g of Fe

3 0
4 years ago
A gas with a volume of 4.0L at a pressure of 205kPa is allowed to expand to a volume of 12.0L. What is the pressure in the conta
mr Goodwill [35]

Answer:

68.3 kilo Pascal is the pressure in the container.

Explanation:

To calculate the new pressure , we use the equation given by Boyle's law. This law states that pressure is inversely proportional to the volume of the gas at constant temperature.

The equation given by this law is:

P_1V_1=P_2V_2

where,

P_1\text{ and }V_1 are initial pressure and volume.

P_2\text{ and }V_2 are final pressure and volume.

We are given:

P_1=205kPa\\V_1=4.0 L\\P_2=?\\V_2=12.0 L

Putting values in above equation, we get:

P_2=\frac{P_1V_1}{V_2}

=\frac{205 kPa\times 4.0 L}{12.0 L}=68.3 kPa

68.3 kilo Pascal is the pressure in the container.

5 0
3 years ago
Which one is the right spot because it really does not make any sense at all (in my viewpoint).
FinnZ [79.3K]

Answer: The last layer

Explanation: If nothing has affected the layers we can answer this accordingly to relative dating. The older rocks should be on the bottom while the younger rocks should be on the top.

5 0
2 years ago
Read 2 more answers
Use the naming conventions to complete the following formula-name pairs of binary acids. Match the acid names and chemical formu
ohaa [14]

Answer:

This looks like a hard question for me is this biology

Explanation:

6 0
3 years ago
A man walks 4 miles in 2 hours. Calculate his average speed in miles per hour (mi/hr).
marishachu [46]

Answer:

2mi/1 hr

Explanation:

4÷2=2

2÷2=1

hope this helps

6 0
3 years ago
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