Consider the reaction 2Al (OH) 3 (s) →Al2O3 (s) + 3H2O (l) with enthalpy of reaction ΔHrxn∘=21.0kJ/mol What is the enthalpy of formation of Al2O3 (s) ?

How many formula units are in 12.5 moles of calcium phosphate

A set-back only occurs at the beginning of an exercise program cannot be overcome is normal is only the result of poor training

A sample of gas occupies a volume of 120.0 mL at a pressure of 0.75 atm and a temperature of 295 K. What will the volume be at a pressure of 1.25 atm and a temperature of 345 K? a) 48 mL b) 4 mL c) 8 mL d) 84 mL

Identify the reaction type and balance it 3. _Zn + _HCI → _ZnCl2 + _H2

One can safely assume that the 3s - and 3p-orbitals will form molecular orbitals similar to those formed when H 2s - and 2p-orbitals interact. According to molecular orbital theory, what will be the bond order for the Cl2 + ion? a. 0.5 b. 1 c. 1.5 d.

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB

Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?

Nonrenewable resources are?

Watch the animation, then check off the samples that will conduct electricity. Check all that apply. View Available Hint (s) Check all that apply. NaCl solution Solid NaCl Solid sugar Sugar solution

Burning wood represents a chemical change. True or False?