What pressure must be applied to keep a gas at 750 torr and 300 k at a constant volume of 200 mL if the temperature is raised to 450 k

List four observations that indicate that a chemical reaction may be taking place

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.