Which is the formula mass of Na₂SO₄? *

1. 119 amu

2. 125 amu

3. 142 amu

4. 174 amu

In the modern periodic table, elements are ordered

the elements iron (Fe), copper (Cu), and mercury (Hg) are classified as metals. which physical property of metals do they all share?

Atoms of lithium (li) and cesium (cs) both lose electrons and become positive ions when they from ionic bonds. which type of atom requires more energy to become an ion? why?

Why does the skateboarder continue to move forward when he hits the trash?

Oftentimes solubility of a compound limits the concentration of the solution that can be prepared. Use the solubility data given with each compound shown below to determine which compound would allow the preparation of a 10.0 Molar solution.

Find the molar mass of potassium dichromate, K2Cr2O7

Zn (s) + cu2 + (aq) →zn2 + (aq) + cu (s). part a under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 51.0 g of copper is plated out?

13 This word describes the circulatory system that provides nutrients and oxygen to living cells of the body.

Write the outer electron configuration for the group 15 element in the fourth period.

Describe the relationship between transmittance and the absorbance?