i believe it called an eclipse
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Answer:
B
Explanation:
There's no explanation please can you help me
<u>Answer:</u> The absorbance for a solution is 0.0028
<u>Explanation:</u>
To calculate the absorption of a solution, the equation by Beer-Lambert law is used:
OR
where,
A = absorbance = ?
= molar absorptivity = [/tex]15000m^2mol^{-1}L[/tex]
b = path length = 1 cm = 0.01 m (Conversion factor: 1 m = 100 cm)
Given mass of carotene = 0.1 mg = 0.0001 g (Conversion factor: 1 g = 1000 mg)
Molar mass of carotene = 536 g/mol
Volume of solution = 10 mL
Putting values in equation 1:
Hence, the absorbance for a solution is 0.0028
Answer:
The same elements are :
Element 1 and Element 3
Both contain equal number of proton = 6
Explanation:
In the modern periodic table elements are arranged according to their <u>atomic number.</u> Hence those elements which have same atomic number are same element.
Atomic Number = The number of protons present in the nucleus of the atom is called atomic number.
<u><em>The </em></u><u><em>same element can have different number of neutron</em></u><u><em>s , this occur in the case of isotopes.</em></u>
<u><em>The </em></u><u><em>same element can have different number of electrons</em></u><u><em> . When the element form ions (cation and anions) the number of protons and electrons are different.</em></u>
<u><em>The same </em></u><u><em>element can never have different Proton</em></u><u><em>.</em></u>
So,
In case of Element 1 and Element 3 : The number of proton are same = 6 . Hence they are same element (= Carbon "C")
Element 1 = Neutral (= zero charge) because it has equal numbe rof proton and electron.
Element 3 =Anion(= negative charge) because it has more electron(= 7) , Than proton(=6)