A hydrogen electron is elevated from level 1 to level 2. Another electron is elevated from level 2 to level 4. The transition requiring the greatest energy change is.

Which mineral might scratch the mineral fluorite but would not scratch the mineral amphibole

Which compound matches the ir spectrum best?

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO (s) + H2O (l) → Ca (OH) 2 (s) A 5.00-g sample of CaO is reacted with 4.83 g of H2O.

How will the vapor pressure of a solution compare to the pure solvent?

All of the following conditions of STP are true except A. 101.3 kPa B. 3.81kPa. L/mol. K C. 24.2 L D. 273.15 K

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals

5.2*10^26 molecules of ch4 in volume

Which of the following statements about igneous rocks is correct A. intrusive igneous rocks are formed when magma is called above the ground. B. Extrusive igneous rocks are formed when magma is cooled above the ground C.

The compound KOH is called

A balloon contains 1.00 mol helium gas at STP. What will the volume of the balloon be if the pressure increases to 2.00 atm?