Answer:
The amount of heat required to melt 25 grams of ice is 8,350 Joules or 2,000 calories.
Explanation:
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Because the bond order in an oxygen gas is shown to be equal to 2, the idea furthermore supports the prediction of the molecular orbital theory in the paramagnetism of oxygen gas. This theory is primarily used when electrons are not included in the individual bonds for determining molecular structure.
1 mole of NO2= 7 + (8×2)= 7 + 16 = 23g
81g of NO2 = 81÷23 = 3.5217
Ans = 3.5 moles ...//