A gas that has a volume of 42 liters, a temperature of 55°C, and an unknown pressure has its volume increased to 48 liters and its temperature decreased to 50°C. If I measure the pressure after the change to be 2.0 atm, what was the original pressure of the gas? (Show work for credit)
A. 2.3 atm
B. 4.6 am
C. 4.6 L
D. 2.3 L

What element is in the lathanide family?

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.

Answer explain why it is not possible to deduce a complete order of reactivity.