The subscript 2 on the Bromine, Br atom simply means Magnesium ion is; Mg²+.
Discussion:
When magnesium ion, Mg²+ combines with an halogen like Bromine, Br-.
In such scenario, there must be a balance of charges for the formation of a compound like MgBr2.
As such, 2 Br- ions and 1 Mg²+ are necessary to maintain charge balance in the compound.
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The '2' in Magnesium bromide (MgBr2) represents the 2 bromide ions that associate with each magnesium ion in the ionic compound, ensuring overall neutrality.
In the ionic compound Magnesium bromide (MgBr2), the '2' signifies the number of bromine (Br) atoms that are combined with a single atom of Magnesium (Mg) to form this compound. This is due to the fact that magnesium (Mg) has two valence electrons which it donates to form a stable compound, resulting in a Mg2+ cation. The bromine atom accepts one electron to form a Br- anion. Since Mg needs to donate two electrons, two Br ions are required, which gives us the '2' in MgBr2. This ratio of ions ensures neutrality of the overall ionic compound.
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B:Radiation moves from a warmer object to a cooler object
C:Radiation moves from a warm object to an object of the same temperature.
D:Radiation moves from a cool object to an object of the same temperature
Answer: B
Explanation:LATE IM LATE BUT ITS
Answer:
M(NaOH) = 0.0789 M
Explanation:
NaOH + HCl ---> NaCl + H2O
M(NaOH)*V(NaOH) =M(HCl)*V(HCl)
M(NaOH) *45.0 mL (NaOH) = 0.12 M(HCl) * 29.6 mL(HCl)
M(NaOH) = 0.12*29.6/45.0 = 0.0789 M
They have a crystalline structure.
B.
They contain useful metals.
C.
They are made of silicon and oxygen.
D.
They are too hard to be scratched with a nail.
Answer:
m = density x volume
The density of O2 is 1.429g/L
1.429g/L x 1L = 1.429g
1.429g/32g/mol = 0.045 moles
Explanation:
B respiration
C pollination
D photosynthesis
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