1. How many moles does 8.19 L of gas at STP represent? 2. How many moles does 21.7 L of gas at STP represent?

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

Use the measurements in the table to determine which unidentified metal has the highest density. metal volume mass a 10.5 cm3 122 g b 14.2 cm3 132 g c 16.1 cm3 115 g d 12.7 cm3 126 g

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.