Answer:
The empirical formula of this question is :
C.
Explanation:
The empirical formula is the simplest whole number ratio of elements in the chemical formula of the molecule.
It is calculated using:
n = The common factor
The Molecular formula represents the exact composition of the elements in the compound.
For example :
Molecular formula : C4H8O2
<em>Find the common factor n ?</em>
<em>here , 2 is common factor(which is divisible by 4 ,8,2)</em>
divide each element by 2
generally 1 is not written
C2H4O is the empirical formula
In this question , the molecular formula C40H56
n = common factor = 8(It is divisible by 40 , 56 )
So, correct option is<u> C</u>
The answer is: 60.
Tobacco products are made up of thousands of chemicals, including at least 60 known to cause cancer (carcinogens).
Some of carcinogens chemicals are: acetaldehyde, arsenic, radioactive elements (for example polonium-210), nitrosamines, nickel, benzene, polycyclic aromatic hydrocarbons, vinyl chloride.
Smoking tobacco causes at least 15 different types of cancer. For example: mouth, pharynx, larynx, oesophagus, liver, pancreas, stomach, kidney cancer.
During a phenomenon called beta decay the neutron of the isotope uranium 237 emits/releases an electron causing an increase of atomic number. With the reference of a periodic table the "new" element is Neptunium or Np-237.
Answers with Explanations:
1. Explain how thermal energy is transferred from the sun to Earth's surface.
"Thermal energy" refers to the<em> energy produced from heat</em>. The sun gives off <em>light energy</em> (solar) through it sunshine. This solar energy penetrates the atmosphere of the earth. Once the atmosphere is heated, it transfers the thermal energy to the Earth's surface in the form of rays. This process is called "radiation."
This can also be done through the process called "conduction." Since air is a poor conductor of heat, thermal energy is only being transferred in the atmosphere. Direct contact between objects is essential in conduction.
It is said that some of the heat transferred to Earth<em> bounces back to the atmosphere.</em> This is because once the Earth's surface heats up,<u> the </u><u>warmest air expands</u><u> and rises towards the atmosphere.</u>
2. How does this energy impact the land and water on Earth?
The sun heats up both the land and water on Earth. However, water is a good conductor of heat so it allows heat to stay in it for a<u> longer period of time. </u>On the contrary, the Earth's land surface is a poor conductor of heat so this allows heat to escape faster than in water. The rays of the sun can penetrate the water at a<em> deeper length</em> than that of the soil.
Answer:
0.220 M
Explanation:
<em>In the equivalence point, [H⁺] = [OH⁻]</em>.
This means we can use the formula C₁V₁=C₂V₂
Where
So we <u>compute the given data in the formula</u> to calculate C₂:
- 0.0500 M * 17.6 mL = C₂ * 4.00 mL