One mole of zinc has a mass of 65.4 grams. approximately how many atoms of zinc are present in one mole of zinc? 32 × 1023 atoms 6 × 1023 atoms 66 atoms 65 atoms

Collected over water at 30.0 ∘c at a total pressure of 736 mmhg . part a what is the partial pressure of the hydrogen gas collected in this way? p p = nothing mmhg request answer part b if the total volume of gas collected is 720 ml , what mass of hydrogen gas is collected? m m = nothing g

Why is the melting of ice a physical change ?

Write and balance the chemical equation that represents the reaction of aqueous sulfuric acid with aqueous sodium hydroxide to form water and sodium sulfate. include phases.