D. Aparear la función con el compuesto que corresponda: 37. ( ) Oxido básico A. CuOHNO3 38. ( ) oxido ácido В. NaH2PO4 39. ( ) Hidróxido C. Al2O3 40. ( ) Acido Hidrácido D. KCaPO4 41. ( ) Acido oxácido E. K2SO4 42. ( ) Sal Haloidea F. HI 43. ( ) Oxisal ácida G. HCIO4 44. ( ) Oxisal básica H. SO3 45. ( ) Sal doble 1. NaI 46. ( ) Hidruro J. Ca(OH)2 47. ( ) Peróxido K. NaH 48. ( ) Sal neutra L. Na2O2

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.