Suppose the innermost orbit an electron can occupy has an energy level of - 19 eV. Based on the absorption spectrum shown below, what is the energy of energy level 4?

Write a balanced equation for the complete combustion of pentane, c5h12. do not enter phase symbols. enter the alkane formula as c5h12.

After completing an experiment to determine gravimetrically the percentage of water in a hydrate, a student reported a value of 38 percent. The correct value for the percentage of water in the hydrate is 51 percent.

25 In general, for a gas at a constant pressure, A the temperature of the gas is inversely proportional to its volume B. the temperature of the gas is inversely proportional to its pressure C.

What does the group number on the periodic table tell you?

2 examples of important cations in biological systems?

Do organs of different species resemble each other?

Calculate the mass of grams of 14.79ml of a substance. It'd density is 1.193gml

The molecular weight of NaCl is 58.44 grams/mole. If you had a 1.0 molar solution (1.0 M), you would have to put 58.44 g of salt in 1.0 liter of solution. How many moles of NaCl would you have in 100 mL of this solution

Find an element from the halogen group and noble gases group and tell how it is used in everyday life.

Write the name of the following compound MgSO4 • H20