4 HF(g)+SiO2(s) → SiF4(9)+2 H2O(9)
Is the Si oxidized or reduced?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

What type of organic molecule comprises the majority of a potato?

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.