Calculate the mole fraction of total ions in an aqueous solution prepared by dissolving 0.400 moles of mgcl2 in 850.0 g of water.

Where does the peak wavelength emitted by the Sun fall in the electromagnetic spectrum? in the green-blue range in the ultraviolet range in the yellow-green range in the infrared range

There are more hydroxide ions in a solution than hydrogen ions. The solution is acidic basic neutral a salt

Ow many valence electrons do atoms in group 1, group 2, group 15, group 16, group 17 have?

What happens at the anode and the cathode of an electrochemical cell? Why do electrons flow from the anode to the cathode?

Aaliya knows that sliced apples turn brown when left out in the open air. She also knows that pouring certain liquids on then will keep this from happening. Aaliya thinks that water, ginger ale, or lemon juice may do the trick.

Determine the molecular weight of H2O. 18 g 18.0 g 18.01 g 18.016 g

Nonmetals gain electrons under certain conditions to attain a noble-gas electron configuration. how many electrons must be gained by the element c?

Which of these is a mixture? A. carbon b. oxygen c. air d. Carbon Dioxide

What hypothesis can you draw about penicillin

what is the height of a block with a length of 10cm a width of 5cm a mass of 50g and a density of 8.64g/cm3