The heat loss through a window (r-2) is 10 mmbtu/year. calculate the payback period (in years) if argon is filled in the window to increase the effective r-value of the window to 10. assume heating price to be $10/mmbtu and the cost for filling argon is $20.

0.09 moles of sodium sulfate in 12 ml of solution

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

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.