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) ?

What describes the basis of the band theory of metallic bonding

Convert one TBSP of salt to moles (There is 5.69g of NaCl in one TBSP.)

Was energy made or created

Comparing and contrasting embryos of different species is called A) homology B) evolution C) selective breeding D) comparative embryology

Marco designs an experiment that will test whether a new plant food makes a grape vine produce more grapes. What is the independent variable in his experiment?

If a new substance is formed in a chemical reaction, what atoms do they consist of?

What is a scientific explanation for a range of hypotheses and observations supported by testing

A chemical reaction involves the rearrangement of atoms to form new molecules. During a chemical reaction, however, atoms are neither created nor destroyed. Which of the following is true about the atoms involved in a chemical reaction? A.

What is the new concentration, after diluting 300 mL of a 1.5 M LiCl solution to 1L

The answer that he gave was wrong