A 3.50L flask is filled with 1.50mol of gas at a temperature of 298K. What is the pressure (in atmospheres) of the gas in the flask? Assume ideal gas behavior.

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

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom