Answer:
Oxygen is more electronegative.
Explanation:
Electronegativity:
Electronegativity of an atom is its tendency to attract the electron to wards it self.
Br = 2.98
O = 3.44
Oxygen is more electronegative than bromine thus it attract electron more strongly towards itself as compared to bromine.
when an more electronegative atom combine with less electroneagtive atom partial charges are created upon them. e.g
In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive.
Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion.
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Answer:
There are 0.0528 moles of Chromium Carbonate (III) in 15 grams. See the explanation below, please.
Explanation:
We calculate the weight of 1 mol of compound having the atomic weights of each element.
Weight Cr = 51, 9961 g Weight 0 = 15, 999 Weight C =12, 0107
Weight of 1 mol of Cr2 (C03)3 =51, 9961 x2 + 3 x (12, 0107 + 15, 999x 3)=
284, 0342 g
284, 0342 g -----1 mol of Cr2 (C03)3
15 g -----X = (15g x 1 mol)/284, 0342 g = 0, 0528 mol
Answer:
Mass stays the same but weight decreases due to a lack of gravity