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How do I decript this passcode (NmI2OTc0NmI2MTc0Nm)? Many thanks? Isnt a triangle just a 3 sided square? Identify X in the reaction below.
X + 1n → 142Ba + 91Kr + 3 1n? I have to prove that √(5n+7) is irrational, given n is a positive integer? How many liters are needed to react with 155 g of hydrogen?