Find the temperature at which ethanol boils on a day in the mountains when the barometric pressure is 547 mmhg. (given: the heat of vaporization of ethanol is 39.3 kj/mol; the normal boiling point of ethanol is 78.3°c; (r = 8.314j/ k • mol).

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

The density of benzene at 15 °c is 0.8787 g/ml. calculate the mass of 0.1500 l of benzene at this temperature. enter your answer in terms of grams