Why does common table salt (NaCl) have a high melting point? ОА.
It forms an ionic bond with a crystal lattice structure.
OB.
It forms a covalent bond with a Lewis dot structure.
O C.
It forms a metallic bond with an electron sea model structure.
OD.
It forms a covalent bond by sharing electrons.
O E.
It forms a metallic bond with a Lewis dot structure.

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)