Under extreme heat and pressure, sandstone will transform into quartzite. what type of rock is quartzite

A+b→2c when the reaction begins, the researcher records that the rate of reaction is such that 1 mole of a is consumed per minute. after making changes to the reaction, the researcher notes that 2 moles of a are consumed per minute. what change could the researcher have made to effect this change?

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

Which substance can be broken down by chemical means