Which of the following are true about electricity and magnetism? i. an electric current can be produced by a changing magnetic force. ii. a magnetic force can be produced by an electric current. iii. energy cannot be transferred by an electric current. iv. a magnetic force can attract a metal object only if the object is touching the magnet.

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant