Sodium oxide contains Na + ions and O2 - ions.

Give the formula of sodium oxide

2. A volume is measured experimentally as 4.26 mL. What is the percentage error, given that the correct value is 4.15 mL? Measurements and Calculation

The following system is at equilibrium:X (s) + 3Y (g) ⇌Z (g) X (s) + 3Y (g) ⇌Z (g) Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.

A solution is made by mixing 36. g of heptane (C_7H_16) and 16. g of chloroform (CHCl_3). Calculate the mole fraction of heptane in this sol'. Be sure your answer has the correct number of significant digits.

Why was Becquerel's experiment a first step in discovering radioactivity? A. It showed that a substance could phosphoresce when it was not exposed to light. B. It showed that the substance that was used by Becquerel could phosphoresce. C.

David says, "Pure honey has nothing else added." Susan says,"The honey is not really pure. It is mixture of many subsatnces. Who is right? Explain your answer.

Al2 (SO3) 3 what are the number of atoms

How marly electrons are in an atom of elemental sodium?

Petroleum and coal can be mined from the continental shelf. t/f

A solid substance turns into a liquid. Which best describes this change?

List two things you know about nonrenewable energy