Answer:
- <u>Purpose of Iodine:</u>
Iodine plays a vital role in thyroid health. Our thyroid gland, which is located at the base of the front of your neck, helps regulate hormone production. These hormones control your metabolism and heart health.
The symbol of Iodine is " I ".
Atomic mass of Iodine is 126.90447 u
No. of protons in Iodine is 53.
No. of neutrons in Iodine is 74.
No. of electrons in Iodine is 53.
All atoms of the same element have the same atomic number
Answer:
D.) molecule
<h3>When the same or different atoms combine together they for a molecule</h3>
Answer:
Explanation:
Hello!
In this case, considering that the mass of hydrazine is missing, we can assume it is 130.0 g (a problem found on ethernet). In such a way, since we need a mass-mole-atoms relationship by which we can compute moles of hydrazine given its molar mass (32.06 g/mol), then the moles of hydrogen considering one mole of hydrazine has four moles of hydrogen and one mole of hydrogen has 6.022x10²³ atoms (Avogadro's number); therefore, we proceed as shown below:
Notice 130.0 g has four significant figures, therefore the result is displayed with four as well.
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Barium is a chemical element with symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Because of its high chemical reactivity, barium is never found in nature as a free element. Thanks and I hope it helped.
