3(9) = 27
3(7) = 21
3(9+7) = 48
27+21 = 48
48=48
Answer:
The standard enthalpy of formation is the energy that would be involved if one mole of the substance were to be formed from its elements that were at standard conditions of temperature and pressure which are 25 degrees C and one atm pressure.
Step-by-step explanation:
43n^2-54. then do the exponent part your self! :)
Answer:
pairs
Step-by-step explanation:
Given
Profit on selling 'x' pairs of shoes is 
Find the derivative of the function to find out the critical points

Thus, for 4 pair of shoes profit is maximize.
Answer: neither
Step-by-step explanation: because 64 kg and 640000g are equal masses.