Consider this combination reaction:

2Mg (s) + O2 (g) →2MgO (s) ΔH=-1204 kJ

What is the enthalpy for the decomposition of 1 mole of MgO (s) into Mg (s) and O2 (g) ?

If excess ammonium sulfate reacts with 20.0g of calcium hydroxide how many grams of ammonia are produced

An aqueous solution of sodium chloride is best classified as a (1) homogeneous compound (2) homogeneous mixture (3) heterogeneous compound (4) heterogeneous mixture

The safe dosage of the IV antibiotic ceftriaxone for children weighing more than 2.0 kg is 60. mg per kilogram of body weight. Suppose a pediatric nurse has available 1.5 L of a ceftriaxone solution with a concentration of 0.030 g/mL.

Calculate the molarity of a KCl solution if 37.3 g of KCl are dissolved in water to give a final solution volume of 500 ml.

What is an atomic emission spectra?

Describe the solubility of water compared to ethanol?

When the free-energy change (AG) of a reaction is negative, the reaction is said to be: Endergonic Non spontaneous Spontaneous Endothermic

The solubility of carbon dioxide gas in water can be increased by

What two quantities are conserved in every chemical reaction? a. moles and mass c. volume and mass b. mass and atoms d. moles and atoms?

What two chemical mechanisms change pyruvate to acetyl-CoA in the pyruvate dehydrogenase complex? Group of answer choices a) Decarboxylation and condensation. b) Oxidation and decarboxylation. c) Condensation and dehydrogenation.