2. Relacione a coluna da esquerda (ligas metálicas) com a da direita (principais metais que as compõem):
a. Amálgama odontológica ( ) ferro, carbono, cromo e níquel.
b. Ouro 18 quilates ( ) bismuto, chumbo, estanho e cádmio.
c. Aço inoxidável ( ) ouro, prata e cobre.
d. Liga de metal fusível ( ) prata, estanho, cobre, zinco e mercúrio

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

Select the correct value for the indicated bond angle in each of the compounds. o−o−oo−o−o angle of o3 90° 109.5° < 109.5° 120° < 120° 180° f−b−ff−b−f angle of bf3 180° < 109.5° < 120° 120° 109.5° 90° f−o−ff−o−f angle of of2 < 120° 120° 90° 109.5° 180° < 109.5° cl−be−clcl−be−cl angle of becl2 90° 109.5° 180° 120° < 109.5° < 120° f−p−ff−p−f angle of pf3 90° 109.5° < 109.5° 180° 120° < 120° h−c−hh−c−h angle of ch4 90° < 109.5° 180° 120° < 120° 109.5°

Acandle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax? a low boiling point a low melting point a high boiling point a high melting point