The total bonding energy for the products of a reaction is 2535 kJ/mol and the bonding energy of the reactants is 1375 kJ/mol. Calculate the change in enthalpy, and classify the reaction as endothermic or exothermic.

Which best describes a compound such as magnesium oxide? an impure substance that is made up of two elements a mixture of two uncommon substances a mixture of two common elements a pure substance that is made up of different elements

G a tank contains 300 liters of fluid in which 40 grams of salt is dissolved. pure water is then pumped into the tank at a rate of 5 l/min; the well-mixed solution is pumped out at the same rate.

After your product alkyl ether is recrystallized and dried how do you test the purity

How many moles are there in 141g of AI2O3?

When the sun produces energy it consumes hydrogen and produces what?

At stp 5.6 liters of ch4 which element contains the same number of molecules?

Is a gas that is produced by the ultraviolet radiation in the air in the vicinity of welding operations?

At what the pressure, in atmospheres, that O2, gas at 75°C has a density of 2.00 g/L

What aspect relates to energy

What is the specific heat capacity of silver metal if 75.00 g of the metal absorbs 56.4J of heat and the temperature rises 35.0°C?