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13.02.2021 •
Chemistry
Forming ionic compounds:
Write the formula unit for the ionic compound
1. Na and O
2. K and S
3. Br and Ca
4. Ba and N
5. Al and P
6. I and Al
7. F and Sr
8. Li and Cl
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Ответ:
NameFormula and Charge NameFormula and Charge
ammoniumNH4+ hydroxideOH−
acetateC2H3O2−, or CH3COO−nitrateNO3−
bicarbonate (hydrogen carbonate)HCO3−nitriteNO2−
bisulfate (hydrogen sulfate)HSO4−peroxideO22−
carbonateCO32−perchlorateClO4−
chlorateClO3−phosphatePO43−
chromateCrO42−sulfateSO42−
cyanideCN−sulfiteSO32−
dichromateCr2O72−triiodideI3−
Explanation:
Ответ:
8 meters per second per second
Explanation:
Newton's second law:
, force = mass multiplied by acceleration.
Therefore 56 / 7 = acceleration = 8