To which period does the Lanthanide series belong? Actinides?

In two or more complete sentences, explain how you can prove that the number of degrees that the Moon rotates around the Earth each day is approximately 12.2⁰.

How high would the level be in an alcohol barometer at a pressure of 0.72atm? the density of alcohol is 0.79*103kg/m3, and 1atm=1.013*105n/m2?

How much sulfur dioxide can be produced by the combustion of 21 tons of sulfur?

How do you find the charge of an ion

NH3+HNO2 → What is the product

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of

Why are the elements in groups 3 to 12 often used to make dyes?

What is not needed for corrosion of metals? a. oxygen c. water b. ions d. sunlight

What force can move the oceans

How many moles of NO3 are there in 6.2g