A because dormant volcanoes are volcanoes that have not erupted in a long time but are expected to erupt again in the future
There is one electron in the valence shell of every halogen. Two halogen atoms join together to form a covalent connection (sharing one electron each). Thus, inter-halogen compounds with 1+ or a 1- charge contain an even number of atoms.
An interhalogen compound is a molecule with no atoms from any other group of elements and two or more different halogen atoms (fluorine, chlorine, bromine, iodine, or astatine). The majority of interhalogen chemicals are binary (composed of only two distinct elements).
Learn more about interhalogen compounds here:
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Answer:
I think it is either a or b
Explanation:
c or d has the correct names and Roman numerals.
Answer:
2.33×10¯¹⁶ g of forsterite
Explanation:
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×10²³ atoms. This equally means that 1 mole of forsterite (Mg2SiO4) contains 6.02×10²³ atoms.
1 mole of forsterite (Mg2SiO4) = (24×2) + 28 + (16×4)
= 48 + 28 + 64
= 140 g
Finally, we shall determine the mass of forsterite that contains a million oxygen atoms.
140 g of forsterite (Mg2SiO4) contains 6.02×10²³ atoms.
Therefore, Xg of forsterite (Mg2SiO4) will contain 1×10⁶ atoms of oxygen i.e
Xg of forsterite (Mg2SiO4) =
(140 × 1×10⁶) /6.02×10²³
= 2.33×10¯¹⁶ g
Therefore, 2.33×10¯¹⁶ g of forsterite contains a million oxygen atoms..
Answer:
Explanation:
The unbalanced nuclear equation is
Let's write the question mark as a nuclear symbol.
The main point to remember in balancing nuclear equations is that the sums of the superscripts and the subscripts must be the same on each side of the equation.
Then
60 = 0 + A, so A = 60 - 0 = 60, and
27 = -1 + Z, so Z = 27 + 1 = 28
Your nuclear equation becomes
Element 28 is nickel, so the balanced nuclear equation is
