Which element has six energy levels?

a) rubidium (rb)

b) cesium (cs)

c) potassium (k)

d) sodium (na)

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n

How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4