Which element configuration is 1s2 2s2 2p6 3s2 3p5

Write the balanced equation showing hydrogen iodide (HI (g)) dissolving in water.

Measurements show that enthalpy of a mixture of gaseous reactants decreases by 228. kJ during a certain chemical reaction, which is carried out at a constant pressure.

In a science lab, when an acid is splashed on your skin what do you wash it with?

Uncontrolled hypertension can lead to A. heart attack. B. stroke. C. kidney damage. D. all of the above.

I'm named after a very famous scientist. who am I? (Periodic table)

What is unique about the way that transition metals form compounds? a. They don't form compounds c. They can form bonds with the electrons in the two outer-most shells b. They are the most reactive d. They can donate all of their electrons

What prompted rutherford to do the alpha particle scattering experiment?

How many moles of hydrogen would be required to produce 5.0 mol of water?

What is the biggest difference between an exothermic and endothermic process? A. The direction of energy flow. B. The amount of energy transferred. C. The type of energy being transferred. D. The speed with which energy is transferred.

The mass of 1 mol of chromium (atomic mass 51.996 amu) is