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2 years ago

Wich are the disadvantages of skimming oil spills?

1 answer:

4 0

Oil is sucked up through wide floating heads and pumped into storage tanks. Although suction skimmers are generally very efficient, one disadvantage is that they are vulnerable to becoming clogged by debris and ice and require constant skilled observation.

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Salt water can be desalinated by distillation. How much energy is needed to convert 175 g of salt water at 28.0 °C to water vapo

Vinil7 [7]

Answer:

$\Delta H=4.63x10^{5}J=463kJ$

Explanation:

Hello,

In this case, we find the following states:

a. Liquid salt water at 28.0 °C.

b. Liquid salt water at 102.5 °C.

c. Vapor salt water at 102.5 °C.

The first process (1) is to heat the liquid water from 28.0 °C to 102.5 °C and the second one (2) to vaporize the liquid salt water. In such a way, each process has an amount of energy that when added, yields the total energy for the process as shown below:

$\Delta H=\Delta H_1+\Delta H_2\\\Delta H=mCp\Delta T+m\Delta _VH\\\Delta H=175g*5.19\frac{J}{g*K}*(375.65K-301.15K)+175g*2.26\frac{kJ}{g} *\frac{1000J}{1kJ} \\\Delta H=4.63x10^{5}J=463kJ$

Best regards.

4 0

2 years ago

Earth is approximately 149,600,000 kilometers away from the sun. How would this distance be expressed in scientific notation?

Ronch [10]

Answer:

Explanation:

I dont know nothing cuz am that smart and yes am cool wait I have to wait 67 seconds am not done answering you questions I will be back in a few....

7 0

2 years ago

Is Kl covalent or ionic?

kotegsom [21]

I believe that the answer is ionic

3 0

2 years ago

Chemists can use moles to calculate: A. How much of the products are needed and how much reactant will be made. B. How much prod

damaskus [11]

Answer:

c.- How much of the reactants are needed and how much product will made.

Explanation:

The moles is the matter unit used in chemistry to simplify some calculations, instead of using grams. Also the moles are very useful because the chemical reaction can be balanced.

When a Chemical reaction is balanced, then it can be easily to calculate how many moles are necessary to add in a process to obtain a quantity of grams of a product.

5 0

3 years ago

What is the element 3O2 name

bija089 [108]

Answer:

Triplet oxygen

Explanation:

Based on my research it is called Triplet Oxygen, if this is wrong I'm sorry

5 0

3 years ago