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3 years ago

How is human activity affected by sinkholes

Chemistry

1 answer:

tamaranim1 [39]3 years ago

8 0

The effects of sinkholes vary based on where and how they were formed.

When naturally formed on land, they will change the topography of the surroundings, cause nothing but minor issues, if any issue at all.

When formed on highly populated areas, though, they can cause a lot of damage to humans and properties in the region. Damage caused to the base of a building might be a very serious problem.

Toxic chemicals can also come up through sinkholes.

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How many grams of NaCl (molecular weight = 58.4 g mole-1) would you dissolve in water to make a total volume of 500 mL of soluti

kolezko [41]

Given :

Volume , V = 500 mL .

Molarity , M = 0.5 M .

Molecular mass of NaCl is $58.4\ g/mole$ .

To Find :

How many grams of NaCl is required .

Solution :

Let , NaCl required is x gram .

Molarity is given by :

$M=\dfrac{\text{Number of moles}}{\text{Volume (in liters) }}\\\\M=\dfrac{m}{M\times V}\\\\0.5=\dfrac{x}{58.4\times 0.5}\\\\x=0.5^2\times 58.4\ g\\\\x=14.6\ g$

Hence , this is the required solution.

6 0

2 years ago

Draw a bond-line structure for CH3CH2O(CH2)2CH(CH3)2. Include Lone Pairs in your answer.

mash [69]

Answer:

See explanation and image attached

Explanation:

A bond line structure refers to any structure of a covalent molecule wherein the covalent bonds present in the molecule are represented with a single line for each level of bond order.

The bond-line structure of CH3CH2O(CH2)2CH(CH3)2 has been shown in the image attached. We know that oxygen has a lone pair of electrons and this has been clearly shown also in the image attached.

7 0

3 years ago

How much energy is needed to raise 70 g of paper 40 degrees celsius?

Natali5045456 [20]

Explanation: Heat capacity is the amount of heat required to change the temperature of a ... Therefore, specific heat is measured in Joules per g times degree Celsius

5 0

3 years ago

What is true of a substance with a lot of mass?

fomenos

Answer:

A. it contains a lot of matter

5 0

3 years ago

Read 2 more answers

Nitration of 1,4−dimethylbenzene (p−xylene) gives a single product having the molecular formula c8h9no2 in high yield. draw this

GarryVolchara [31]

Structure is in document below.
The mononitration of p-xylene can be easily carried out at 30 degrees C.
Para-xylene (p-xylene) is an aromatic hydrocarbon, one of the three isomers of dimethylbenzene. Para-xylene is colorless and highly flammable, not acutely toxic and has some narcotic effects.

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8 0

3 years ago