Similarities between Noble Gases and Alkali Metals?

Elemental cesium reacts more violently with water than does elemental sodium.

When an atom gives off energy in the form of light, a. it becomes excited. b. it becomes more stable. c. it returns to ground state. d. both b & c e. none of the above.

If cacl2 is dissolved in water, what can be said about the concentration of the ca2 + ion? hints if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl - ion.

Explain in your own words how electromagnetism works.

Evan finds a rock while hiking. It has a fossil in it. The rock is most likely a (n): igneous rock sedimentary rock metamorphic rock

Can magnetism be used to identify a substance

Nitrogen dioxide dimerizes to give dinitrogen tetroxide: 2NO2 (g) → N2O4 (g). At 298 K, 12.55 g of an NO2/N2O4 mixture exerts a pressure of 0.963 atm in a volume of 6.92 L. What are the mole fractions of the two gases in the mixture?

What is the concentration of a solution, in gsolute/100gsolvent, made using 2.83 g of KNO3 in 2.03 g of H2O? Do not include units in your answer.

Why does pressure change in this way? Select all that apply.

Will platinum (pt) metal react with a lead (ii) nitrate solution?