An empty beaker weighs 35.024g. A 10mL pipet sample of an unknown liquid is transferred to the beaker. The beaker weighs 72.962 g when weighed with eh liquid in it. Calculate the density of the unknown liquid.

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .