The electronic configuration of an element is 1s2 2s2 2p6 3s2 3p1 . An atom of this element form an ion that will have charge (A) +1 (B) +2 (C) +3 (D) -1

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

What extra step distinguishes fermentation from glycolysis