What element has two electrons in its fourD sub level

Imagine that you mix 50 g of a solute with 100 g of water at 40 ∘c. classify each solute by whether it would completely or partially dissolve under these conditions. drag the appropriate items to their respective bins.

True Or False? 1.) Humans also need the Sun. 2.) Some Jellyfish Glow 3.) Some houses are Small when you are outside but when you walk inside its Big.

A 40-lb container of peat moss measures 14x20x30 in. a 40-lb container of topsoil has a volume of 1.9 gal. (a) calculate the average densities of peat mass and topsoil in units of g/cm3.

The density of solid Cr is 7.15 g/cm3. How many atoms are present per cubic centimeter of Cr?

The difference between paper chromatography and thin layer chromatography is that

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?

If 100 mL of a gas were enclosed in a buret at 500 mm Hg, what volume would the gas occupy at 1000 mm Hg at the same temperature? P1V1=P2V2

Would Mn (HPO4) 2 be manganese (II) monohydrogen phosphate?