Calculate the AHº for the imaginary reaction A + B --> C +D
Given:
AH°F (A) = 25 kJ/mol
AHºf (B) = -75 kJ/mol
AH°F (C) = -200.kJ/mol
AH°F (D) = 15k J/mol

Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical reaction: →+p4o10s6h2ol4h3po4s round your answer to zero decimal places.

Is a pencil falling to the floor anon contact force, a force, or a contact force

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)