Which rule for assigning oxidation numbers is correct?

Hydrogen is usually - 1.

Oxygen is usually - 2.

A pure group 1 element is + 1.

A monatomic ion is 0.

Can someone use Endothermic (science) in a sentence?

Which is a general representation of a secondary amine?

The following is an example of which type of chemical reaction? Na (s) + H2O (l) Imported Asset NaOH (aq) + H2 (g) Single replacement Decomposition Double replacement Combustion

The problem say what is the volume (in kL) of 3.7505 x 10^4 mg of iron? Iron has a density of 7.87 g/ml. Use correct significant figures

What is the number of each different atom in nitric acid

A gas has a volume of 30 L at 105 kPa. What pressure is required to compress the gas to 21 L?

Using special equipment which layer of the sun atmosphere is visible during a total solar eclipse

The characteristic flame test colors of metal ions are due to atomic emission spectra. Duscuss the relationship between the absoption and emission of light and the factors responsible for flame test colors.

Should a bartender use ice and scoop directly from ice machine or use an ice holding device and scoop to make drinks and refill drinks from

What classification should this reaction have? 4Al + 3O2 → 2Al2O3