Will give BRAINLIEST and 50 points What color would you expect to see for a flame test of barium hydroxide, Ba(OH)2?

Please explain why it would be that color, and how you know.

What substance has a mass of 9.5g and volume of 2.1cm^3

One nanometer is equal to how many meters?

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.