A pure aluminium block with a mass of 10g is heated so that its temperature from 20C to 50C. The specific heat capacity of aluminium is 8.99 x 10^-1 J/gK. which expression gives the heat energy change in kJ

Asolution at 25 degrees celsius is 1.0 × 10–5 m h3o+. what is the concentration of oh– in this solution?

Bose-einstein condensation occurs at what temperature?

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.