Amolecule with a central atom and two bonded atoms is bent with a bond angle of 105◦ . assuming the central atom satisfies the octet rule, how many lone pairs does it have?

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

What does the cell nucleus do or, how does it function?

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.