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2 years ago

Which of the following is the main disadvantage to using fossil fuels?

Chemistry

2 answers:

steposvetlana [31]2 years ago

7 0

The answer is A)pollution

g100num [7]2 years ago

4 0

Answer: A. Pollution

Explanation:

Fossil fuels are the fuels which are excavated from undersurface and deep regions of the the earth crust. These are produce by millions of years of decomposition activity of soil microbes on organic matter generated after dead and decaying plants and animals. These fossil fuels are used as a source of energy.

The fossil fuels like coal, petroleum and natural gas produces toxic,harmful and polluting gases like carbon dioxide, carbon monoxide, nitrous oxides on combustion and burning. These gases contaminate the air and water hence causes pollution.

Therefore, the main advantage of using fossil fuel is pollution.

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A chemical equation is shown: C2H4 + O2 → CO2 + H2O According to the law of conservation of mass, how many atoms of oxygen exist

astraxan [27]

Answer:

6 oxygens on the product side

Explanation:

1) balance the equation:

C2H4 + 3O2 → 2CO2 + 2H2O

2) calculate the number of oxygens on the product side

2CO2=4

2H2O=2

6 0

2 years ago

A scientist discovered a microscopic unicellular organism with no nucleus which of the following correctly describes the organis

boyakko [2]

The correct option is this: THE ORGANISM IS A PROKARYOTES.
There are basically two types of cells, prokaryotic and eukaryotic cells. The prokaryotic cells are primitive cells which contain only a few materials which are not well organised. This type of cells is usually found in microscopic organisms. The cells lack organised nucleus and cell organelles which have membranes.

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3 years ago

Read 2 more answers

During region C of the graph above the energy being absorbed is a. increasing the velocity of the water particles. b. increasing

Mkey [24]

Answer:

Your answer would be B. Increasing the distance between the water molecules and increasing their phase energy.

Explanation:

Hope this helps you answer this question!

7 0

2 years ago

What type of product is formed when acids are added to some ionic compounds?

Andru [333]

Answer:

Your Answer is Option A that is Gas.

3 0

1 year ago

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

yuradex [85]

Answer:

$\boxed{\text{2408 min}}$

Explanation:

The integrated rate law for radioactive decay is

$\ln\dfrac{N_{0}}{N_{t}} = kt$

1. Calculate the decay constant

$\begin{array}{rcl}\ln \dfrac{100}{90} & = & k \times 366\\\\1.054 & = & 366k\\\\k & = & \dfrac{1.054 }{366}\\\\k & = & 2.879 \times 10^{-4} \text{ min}^{-1}\\\end{array}\\\\$

2. Calculate the half-life

$t_{\frac{1}{2}} = \dfrac{\ln2}{k}\\\\t_{\frac{1}{2}} = \dfrac{\ln2}{2.879 \times 10^{-4} \text{ min}^{-1}} = \text{2408 min}\\\\\text{The half-life for decay is } \boxed{\textbf{2408 min}}$

8 0

3 years ago