if there is a piece of metal will it still be attracted to the magnetic even if it is outside of the magnetic field? Will the magnetic field line connect to the object?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?