A certain ore is 26.9% nickel by mass. How many kilograms of this ore would you need to dig up to have 50.0 g of nickel?

Explain, in terms of electrons, why the radius of a potassium atom is larger than the radius of the potassium ion in the ground state.

Which factor is most responsible for the fact that water is a liquid rather than a gas at room temperature? van der Waals forces hydrogen bonding London dispersion forces ionic bonding

How many grams of FeO are in 12.5 moles?

In your own words, explain what "the more mass a substance has, the greater the object's thermal energy" means.

Five different substances are given to you to be dissolved in water. Which substances are most likely to undergo dissolution in water? lithium iodide, LiI sodium fluoride, NaF potassium bromide, KBr benzene, C6H6 hexane, C6H14

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