Answer:
85 ml
Explanation:
move the decimal place over two times
Exothermic gives off heat/energy and endothermic takes in heat/energy. Exothermic example: a candle flame
Endothermic example: baking bread
In Exothermic, you can expect the surrounding temp. to rise, and in Endothermic you can expect the surrounding temperature to fall.
Hope this helps
The number of electrons shared between the atoms in a I₂ molecule is two (2).
Explanation:
An iodine atom has 53 electrons and its electron configuration is;
2. 8. 8. 18. 17
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁵
Note that the outermost p shell has 5 electrons while it can accommodate a maximum of 6 for stable electron configuration. Therefore an Iodine atom needs one (1) electron to acquire nobility. Two Iodine atoms will, therefore, share two electrons (each from one of their p sub-shell ) by covalent bonds to form I₂
Learn More:
For more on electron configuration and nobility check out;
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Answer:
The answer to your question is Protons = 78, Neutrons = 117, Electrons = 76
Explanation:
¹⁹⁵Pt²⁺
Protons are equal to the atomic number, Platinum has an atomic number of 78 so the number of protons = 78.
The number of neutrons = Mass number - Number of protons
= 195 - 78
= 117
The number of electrons is equal to the number of protons - two, we know this because of the 2+ exponent next to the Platinum symbol.
Number of electrons = 78 - 2
= 76
