Choose all the answers that apply.

jess scratches an unknown mineral with topaz, which has a mohs hardness of 8. topaz leaves a scratch on the unknown mineral. the unknown mineral

is harder than topaz
is softer than topaz
is softer than diamond
is harder than diamond
has a mohs hardness of 10

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.